List of The Big Bang Theory episodes

The Big Bang Theory is an American comedy television series created and executively produced by Chuck Lorre and Bill Prady. Like the name of the series itself (with the exception of the first episode "Pilot"), episode titles of The Big Bang Theory always start with "The" and resemble the name of a scientific principle, theory or experiment, whimsically referencing a plot point or quirk that is stated in that episode.

In March 2014, the show was renewed for three more years through a tenth season, which premiered on September 19, 2016.^[1]^[2] As of December 1, 2016, 217 episodes of The Big Bang Theory have aired. There was also an unaired pilot which CBS did not broadcast.

Series overview

Season		Episodes	Originally aired		Nielsen ratings
Season		Episodes	First aired	Last aired	Viewers (millions)	Viewers rank	18–49 rating/share	18-49 rank
	1	17	September 24, 2007 (2007-09-24)	May 19, 2008 (2008-05-19)	8.31	68^[3]	3.3/8	46^[4]
	2	23	September 22, 2008 (2008-09-22)	May 11, 2009 (2009-05-11)	10.03	40^[5]	N/A	N/A
	3	23	September 21, 2009 (2009-09-21)	May 24, 2010 (2010-05-24)	14.22	12	5.3/13	5^[6]
	4	24	September 23, 2010 (2010-09-23)	May 19, 2011 (2011-05-19)	13.14	13	4.4/13	7^[7]
	5	24	September 22, 2011 (2011-09-22)	May 10, 2012 (2012-05-10)	15.82	8	5.5/17	6^[8]
	6	24	September 27, 2012 (2012-09-27)	May 16, 2013 (2013-05-16)	18.68	3	6.2/19	2^[9]
	7	24	September 26, 2013 (2013-09-26)	May 15, 2014 (2014-05-15)	19.96	2	6.2/20	2^[10]
	8	24	September 22, 2014 (2014-09-22)	May 7, 2015 (2015-05-07)	19.05	2	5.6/17	4^[11]
	9	24	September 21, 2015 (2015-09-21)	May 12, 2016 (2016-05-12)	19.36	2	5.8/19	3^[12]
	10	TBA	September 19, 2016 (2016-09-19)	TBA	TBA	TBA	TBA	TBA

Episodes

Unaired pilot

Main article: Pilot (The Big Bang Theory) § Unaired pilot

The original pilot, which CBS passed on, featured Amanda Walsh as Katie instead of Kaley Cuoco as Penny and had a darker tone.

Season 1 (2007–08)

Main article: The Big Bang Theory (season 1)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
1	1	"Pilot"	James Burrows	Chuck Lorre & Bill Prady	September 24, 2007 (2007-09-24)	276023	9.52^[13]
2	2	"The Big Bran Hypothesis"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : Robert Cohen & Dave Goetsch	October 1, 2007 (2007-10-01)	3T6601	8.58^[14]
3	3	"The Fuzzy Boots Corollary"	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Bill Prady & Steven Molaro	October 8, 2007 (2007-10-08)	3T6602	8.36^[15]
4	4	"The Luminous Fish Effect"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : David Litt & Lee Aronsohn	October 15, 2007 (2007-10-15)	3T6603	8.15^[16]
5	5	"The Hamburger Postulate"	Andrew D. Weyman	Story by : Jennifer Glickman Teleplay by : Dave Goetsch & Steven Molaro	October 22, 2007 (2007-10-22)	3T6604	8.81^[17]
6	6	"The Middle-Earth Paradigm"	Mark Cendrowski	Story by : Dave Goetsch Teleplay by : David Litt & Robert Cohen	October 29, 2007 (2007-10-29)	3T6605	8.92^[18]
7	7	"The Dumpling Paradox"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Jennifer Glickman	November 5, 2007 (2007-11-05)	3T6606	9.68^[19]
8	8	"The Grasshopper Experiment"	Ted Wass	Story by : Dave Goetsch & Steven Molaro Teleplay by : Lee Aronsohn & Robert Cohen	November 12, 2007 (2007-11-12)	3T6607	9.32^[20]
9	9	"The Cooper-Hofstadter Polarization"	Joel Murray	Story by : Bill Prady & Stephen Engel Teleplay by : Chuck Lorre, Lee Aronsohn & Dave Goetsch	March 17, 2008 (2008-03-17)	3T6608	9.11^[21]
10	10	"The Loobenfeld Decay"	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn	March 24, 2008 (2008-03-24)	3T6609	8.63^[22]
11	11	"The Pancake Batter Anomaly"	Mark Cendrowski	Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady & Stephen Engel	March 31, 2008 (2008-03-31)	3T6610	8.68^[23]
12	12	"The Jerusalem Duality"	Mark Cendrowski	Story by : Jennifer Glickman & Stephen Engel Teleplay by : Dave Goetsch & Steven Molaro	April 14, 2008 (2008-04-14)	3T6611	7.69^[24]
13	13	"The Bat Jar Conjecture"	Mark Cendrowski	Story by : Stephen Engel & Jennifer Glickman Teleplay by : Bill Prady & Robert Cohen	April 21, 2008 (2008-04-21)	3T6612	7.51^[25]
14	14	"The Nerdvana Annihilation"	Mark Cendrowski	Story by : Bill Prady Teleplay by : Stephen Engel & Steven Molaro	April 28, 2008 (2008-04-28)	3T6613	8.07^[26]
15	15	"The Shiksa Indeterminacy"^[27] "The Pork Chop Indeterminacy"^[28]	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Lee Aronsohn & Bill Prady	May 5, 2008 (2008-05-05)	3T6614	7.38^[29]
16	16	"The Peanut Reaction"	Mark Cendrowski	Story by : Bill Prady & Lee Aronsohn Teleplay by : Dave Goetsch & Steven Molaro	May 12, 2008 (2008-05-12)	3T6615	7.79^[30]
17	17	"The Tangerine Factor"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Steven Molaro	May 19, 2008 (2008-05-19)	3T6616	7.34^[31]

Season 2 (2008–09)

Main article: The Big Bang Theory (season 2)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
18	1	"The Bad Fish Paradigm"	Mark Cendrowski	Story by : Bill Prady Teleplay by : Dave Goetsch & Steven Molaro	September 22, 2008 (2008-09-22)	3T7351	9.36^[32]
19	2	"The Codpiece Topology"	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn	September 29, 2008 (2008-09-29)	3T7352	8.76^[33]
20	3	"The Barbarian Sublimation"	Mark Cendrowski	Story by : Nicole Lorre Teleplay by : Steven Molaro & Eric Kaplan	October 6, 2008 (2008-10-06)	3T7353	9.33^[34]
21	4	"The Griffin Equivalency"	Mark Cendrowski	Story by : Bill Prady & Chuck Lorre Teleplay by : Stephen Engel & Tim Doyle	October 13, 2008 (2008-10-13)	3T7354	9.36^[35]
22	5	"The Euclid Alternative"	Mark Cendrowski	Story by : Bill Prady & Steven Molaro Teleplay by : Lee Aronsohn & Dave Goetsch	October 20, 2008 (2008-10-20)	3T7355	9.28^[36]
23	6	"The Cooper–Nowitzki Theorem"	Mark Cendrowski	Story by : Stephen Engel & Daley Haggar Teleplay by : Tim Doyle & Richard Rosenstock	November 3, 2008 (2008-11-03)	3T7356	9.67^[37]
24	7	"The Panty Piñata Polarization"	Mark Cendrowski	Story by : Bill Prady & Tim Doyle Teleplay by : Jennifer Glickman & Steven Molaro	November 10, 2008 (2008-11-10)	3T7357	10.01^[38]
25	8	"The Lizard–Spock Expansion"	Mark Cendrowski	Story by : Bill Prady Teleplay by : Dave Goetsch & Jennifer Glickman	November 17, 2008 (2008-11-17)	3T7358	9.76^[39]
26	9	"The White Asparagus Triangulation"	Mark Cendrowski	Story by : Dave Goetsch & Steven Molaro Teleplay by : Stephen Engel & Richard Rosenstock	November 24, 2008 (2008-11-24)	3T7359	10.19^[40]
27	10	"The Vartabedian Conundrum"	Mark Cendrowski	Story by : Chuck Lorre & Steven Molaro Teleplay by : Bill Prady & Richard Rosenstock	December 8, 2008 (2008-12-08)	3T7360	10.80^[41]
28	11	"The Bath Item Gift Hypothesis"	Mark Cendrowski	Story by : Bill Prady & Richard Rosenstock Teleplay by : Stephen Engel & Eric Kaplan	December 15, 2008 (2008-12-15)	3T7361	11.42^[42]
29	12	"The Killer Robot Instability"	Mark Cendrowski	Story by : Bill Prady & Richard Rosenstock Teleplay by : Steven Molaro & Daley Haggar	January 12, 2009 (2009-01-12)	3T7362	11.81^[43]
30	13	"The Friendship Algorithm"	Mark Cendrowski	Story by : Bill Prady & Richard Rosenstock Teleplay by : Chuck Lorre & Steven Molaro	January 19, 2009 (2009-01-19)	3T7363	11.10^[44]
31	14	"The Financial Permeability"	Mark Cendrowski	Story by : Chuck Lorre & Steven Molaro Teleplay by : Richard Rosenstock & Eric Kaplan	February 2, 2009 (2009-02-02)	3T7364	10.89^[45]
32	15	"The Maternal Capacitance"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : Richard Rosenstock & Steven Molaro	February 9, 2009 (2009-02-09)	3T7365	13.11^[46]
33	16	"The Cushion Saturation"	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn	March 2, 2009 (2009-03-02)	3T7366	10.94^[47]
34	17	"The Terminator Decoupling"	Mark Cendrowski	Story by : Bill Prady & Dave Goetsch Teleplay by : Tim Doyle & Stephen Engel	March 9, 2009 (2009-03-09)	3T7367	9.46^[48]
35	18	"The Work Song Nanocluster"	Peter Chakos	Story by : Bill Prady & Lee Aronsohn Teleplay by : Dave Goetsch & Richard Rosenstock	March 16, 2009 (2009-03-16)	3T7368	9.76^[49]
36	19	"The Dead Hooker Juxtaposition"	Mark Cendrowski	Steven Molaro	March 30, 2009 (2009-03-30)	3T7369	9.77^[50]
37	20	"The Hofstadter Isotope"	Mark Cendrowski	Dave Goetsch	April 13, 2009 (2009-04-13)	3T7370	10.13^[51]
38	21	"The Vegas Renormalization"	Mark Cendrowski	Story by : Jessica Ambrosetti, Nicole Lorre & Andrew Roth Teleplay by : Steven Molaro	April 27, 2009 (2009-04-27)	3T7371	9.31^[52]
39	22	"The Classified Materials Turbulence"	Mark Cendrowski	Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady & Steven Molaro	May 4, 2009 (2009-05-04)	3T7373	9.25^[53]
40	23	"The Monopolar Expedition"	Mark Cendrowski	Eric Kaplan & Richard Rosenstock	May 11, 2009 (2009-05-11)	3T7372	9.81^[54]

Season 3 (2009–10)

Main article: The Big Bang Theory (season 3)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
41	1	"The Electric Can Opener Fluctuation"	Mark Cendrowski	Steven Molaro	September 21, 2009 (2009-09-21)	3X5551	12.96^[55]
42	2	"The Jiminy Conjecture"	Mark Cendrowski	Jim Reynolds	September 28, 2009 (2009-09-28)	3X5552	13.27^[56]
43	3	"The Gothowitz Deviation"	Mark Cendrowski	Story by : Lee Aronsohn & Richard Rosenstock Teleplay by : Bill Prady & Maria Ferrari	October 5, 2009 (2009-10-05)	3X5553	12.52^[57]
44	4	"The Pirate Solution"	Mark Cendrowski	Steve Holland	October 12, 2009 (2009-10-12)	3X5554	13.07^[58]
45	5	"The Creepy Candy Coating Corollary"	Mark Cendrowski	Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Steven Molaro	October 19, 2009 (2009-10-19)	3X5556	13.47^[59]
46	6	"The Cornhusker Vortex"	Mark Cendrowski	Story by : Bill Prady & Steven Molaro Teleplay by : Dave Goetsch & Richard Rosenstock	November 2, 2009 (2009-11-02)	3X5555	12.73^[60]
47	7	"The Guitarist Amplification"	Mark Cendrowski	Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady, Richard Rosenstock & Jim Reynolds	November 9, 2009 (2009-11-09)	3X5557	12.79^[61]
48	8	"The Adhesive Duck Deficiency"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Dave Goetsch Teleplay by : Steven Molaro, Eric Kaplan & Maria Ferrari	November 16, 2009 (2009-11-16)	3X5558	13.23^[62]
49	9	"The Vengeance Formulation"	Mark Cendrowski	Story by : Chuck Lorre & Maria Ferrari Teleplay by : Richard Rosenstock, Jim Reynolds & Steve Holland	November 23, 2009 (2009-11-23)	3X5559	14.13^[63]
50	10	"The Gorilla Experiment"	Mark Cendrowski	Story by : Chuck Lorre, Richard Rosenstock & Steve Holland Teleplay by : Bill Prady, Steven Molaro & Maria Ferrari	December 7, 2009 (2009-12-07)	3X5560	14.38^[64]
51	11	"The Maternal Congruence"	Mark Cendrowski	Story by : Lee Aronsohn, Steven Molaro, Richard Rosenstock & Maria Ferrari Teleplay by : Chuck Lorre, Bill Prady & Dave Goetsch	December 14, 2009 (2009-12-14)	3X5562	15.58^[65]
52	12	"The Psychic Vortex"	Mark Cendrowski	Story by : Lee Aronsohn & Steven Molaro Teleplay by : Chuck Lorre, Eric Kaplan & Jim Reynolds	January 11, 2010 (2010-01-11)	3X5561	15.82^[66]
53	13	"The Bozeman Reaction"	Mark Cendrowski	Story by : Bill Prady, Lee Aronsohn & Jim Reynolds Teleplay by : Chuck Lorre, Steven Molaro & Steve Holland	January 18, 2010 (2010-01-18)	3X5563	14.99^[67]
54	14	"The Einstein Approximation"	Mark Cendrowski	Story by : Lee Aronsohn, Dave Goetsch & Steve Holland Teleplay by : Chuck Lorre, Steven Molaro & Eric Kaplan	February 1, 2010 (2010-02-01)	3X5565	15.51^[68]
55	15	"The Large Hadron Collision"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Jim Reynolds Teleplay by : Lee Aronsohn, Richard Rosenstock & Maria Ferrari	February 8, 2010 (2010-02-08)	3X5564	16.26^[69]
56	16	"The Excelsior Acquisition"	Peter Chakos	Story by : Chuck Lorre, Lee Aronsohn & Steven Molaro Teleplay by : Bill Prady, Steve Holland & Maria Ferrari	March 1, 2010 (2010-03-01)	3X5566	15.73^[70]
57	17	"The Precious Fragmentation"	Mark Cendrowski	Story by : Lee Aronsohn, Eric Kaplan & Maria Ferrari Teleplay by : Bill Prady, Steven Molaro & Richard Rosenstock	March 8, 2010 (2010-03-08)	3X5567	16.32^[71]
58	18	"The Pants Alternative"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Steve Holland Teleplay by : Eric Kaplan, Richard Rosenstock & Jim Reynolds	March 22, 2010 (2010-03-22)	3X5568	13.42^[72]
59	19	"The Wheaton Recurrence"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro, Nicole Lorre & Jessica Ambrosetti Teleplay by : Bill Prady, Dave Goetsch, Jim Reynolds & Maria Ferrari	April 12, 2010 (2010-04-12)	3X5569	13.39^[73]
60	20	"The Spaghetti Catalyst"	Anthony Rich	Chuck Lorre, Bill Prady, Lee Aronsohn & Steven Molaro	May 3, 2010 (2010-05-03)	3X5570	11.63^[74]
61	21	"The Plimpton Stimulation"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Lee Aronsohn Teleplay by : Steven Molaro, Jim Reynolds & Maria Ferrari	May 10, 2010 (2010-05-10)	3X5571	13.73^[75]
62	22	"The Staircase Implementation"	Mark Cendrowski	Story by : Lee Aronsohn, Steven Molaro & Steve Holland Teleplay by : Chuck Lorre, Dave Goetsch & Maria Ferrari	May 17, 2010 (2010-05-17)	3X5572	15.02^[76]
63	23	"The Lunar Excitation"	Peter Chakos	Story by : Chuck Lorre, Bill Prady & Maria Ferrari Teleplay by : Lee Aronsohn, Steven Molaro & Steve Holland	May 24, 2010 (2010-05-24)	3X5573	14.78^[77]

Season 4 (2010–11)

Main article: The Big Bang Theory (season 4)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
64	1	"The Robotic Manipulation"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Dave Goetsch Teleplay by : Steven Molaro, Eric Kaplan & Steve Holland	September 23, 2010 (2010-09-23)	3X6651	14.04^[78]
65	2	"The Cruciferous Vegetable Amplification"	Mark Cendrowski	Story by : Bill Prady, Lee Aronsohn & Steve Holland Teleplay by : Chuck Lorre, Steven Molaro & Jim Reynolds	September 30, 2010 (2010-09-30)	3X6652	13.05^[79]
66	3	"The Zazzy Substitution"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Jim Reynolds Teleplay by : Lee Aronsohn, Steven Molaro & Maria Ferrari	October 7, 2010 (2010-10-07)	3X6653	12.59^[80]
67	4	"The Hot Troll Deviation"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Adam Faberman Teleplay by : Bill Prady, Lee Aronsohn & Maria Ferrari	October 14, 2010 (2010-10-14)	3X6654	12.57^[81]
68	5	"The Desperation Emanation"	Mark Cendrowski	Story by : Bill Prady, Lee Aronsohn & Dave Goetsch Teleplay by : Chuck Lorre, Steven Molaro & Steve Holland	October 21, 2010 (2010-10-21)	3X6655	13.05^[82]
69	6	"The Irish Pub Formulation"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Steven Molaro Teleplay by : Bill Prady, Eric Kaplan & Maria Ferrari	October 28, 2010 (2010-10-28)	3X6656	13.04^[83]
70	7	"The Apology Insufficiency"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady, Steven Molaro & Steve Holland	November 4, 2010 (2010-11-04)	3X6657	14.00^[84]
71	8	"The 21-Second Excitation"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Jim Reynolds Teleplay by : Lee Aronsohn, Steven Molaro & Steve Holland	November 11, 2010 (2010-11-11)	3X6658	13.11^[85]
72	9	"The Boyfriend Complexity"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Jim Reynolds Teleplay by : Bill Prady, Steven Molaro & Dave Goetsch	November 18, 2010 (2010-11-18)	3X6659	13.02^[86]
73	10	"The Alien Parasite Hypothesis"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Steve Holland Teleplay by : Lee Aronsohn, Jim Reynolds & Maria Ferrari	December 9, 2010 (2010-12-09)	3X6660	12.03^[87]
74	11	"The Justice League Recombination"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady, Steven Molaro & Steve Holland	December 16, 2010 (2010-12-16)	3X6661	13.24^[88]
75	12	"The Bus Pants Utilization"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady, Steven Molaro & Eric Kaplan	January 6, 2011 (2011-01-06)	3X6662	13.98^[89]
76	13	"The Love Car Displacement"	Anthony Rich	Story by : Chuck Lorre, Bill Prady & Dave Goetsch Teleplay by : Lee Aronsohn, Steven Molaro & Steve Holland	January 20, 2011 (2011-01-20)	3X6663	13.63^[90]
77	14	"The Thespian Catalyst"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Jim Reynolds Teleplay by : Bill Prady, Steven Molaro & Maria Ferrari	February 3, 2011 (2011-02-03)	3X6664	13.83^[91]
78	15	"The Benefactor Factor"	Mark Cendrowski	Story by : Bill Prady, Lee Aronsohn & Dave Goetsch Teleplay by : Chuck Lorre, Eric Kaplan & Steve Holland	February 10, 2011 (2011-02-10)	3X6665	12.79^[92]
79	16	"The Cohabitation Formulation"	Mark Cendrowski	Story by : Chuck Lorre, Lee Aronsohn & Dave Goetsch Teleplay by : Bill Prady, Steven Molaro & Jim Reynolds	February 17, 2011 (2011-02-17)	3X6666	12.41^[93]
80	17	"The Toast Derivation"	Mark Cendrowski	Story by : Bill Prady, Dave Goetsch & Maria Ferrari Teleplay by : Chuck Lorre, Steven Molaro & Jim Reynolds	February 24, 2011 (2011-02-24)	3X6667	12.35^[94]
81	18	"The Prestidigitation Approximation"	Mark Cendrowski	Story by : Bill Prady, Steve Holland & Eddie Gorodetsky Teleplay by : Chuck Lorre, Steven Molaro & Eric Kaplan	March 10, 2011 (2011-03-10)	3X6668	12.06^[95]
82	19	"The Zarnecki Incursion"	Peter Chakos	Story by : Chuck Lorre, Steven Molaro & Maria Ferrari Teleplay by : Bill Prady, Dave Goetsch & Jim Reynolds	March 31, 2011 (2011-03-31)	3X6669	11.92^[96]
83	20	"The Herb Garden Germination"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Eddie Gorodetsky Teleplay by : Bill Prady, Steven Molaro & Steve Holland	April 7, 2011 (2011-04-07)	3X6670	11.40^[97]
84	21	"The Agreement Dissection"	Mark Cendrowski	Story by : Bill Prady, Dave Goetsch & Eddie Gorodetsky Teleplay by : Chuck Lorre, Steven Molaro & Eric Kaplan	April 28, 2011 (2011-04-28)	3X6671	10.71^[98]
85	22	"The Wildebeest Implementation"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Eric Kaplan Teleplay by : Bill Prady, Eddie Gorodetsky & Maria Ferrari	May 5, 2011 (2011-05-05)	3X6672	10.50^[99]
86	23	"The Engagement Reaction"	Howard Murray	Story by : Bill Prady, Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre, Steven Molaro & Steve Holland	May 12, 2011 (2011-05-12)	3X6673	10.78^[100]
87	24	"The Roommate Transmogrification"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Eddie Gorodetsky Teleplay by : Bill Prady, Eric Kaplan & Jim Reynolds	May 19, 2011 (2011-05-19)	3X6674	11.30^[101]

Season 5 (2011–12)

Main article: The Big Bang Theory (season 5)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
88	1	"The Skank Reflex Analysis"	Mark Cendrowski	Story by : Eric Kaplan, Maria Ferrari & Anthony Del Broccolo Teleplay by : Chuck Lorre, Bill Prady & Steven Molaro	September 22, 2011 (2011-09-22)	3X6851	14.30^[102]
89	2	"The Infestation Hypothesis"	Mark Cendrowski	Story by : Bill Prady, Steven Molaro & Maria Ferrari Teleplay by : Chuck Lorre, Jim Reynolds & Steve Holland	September 22, 2011 (2011-09-22)	3X6852	14.94^[102]
90	3	"The Pulled Groin Extrapolation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Bill Prady, Steven Molaro & Dave Goetsch	September 29, 2011 (2011-09-29)	3X6853	14.74^[103]
91	4	"The Wiggly Finger Catalyst"	Mark Cendrowski	Story by : Chuck Lorre, Dave Goetsch & Anthony Del Broccolo Teleplay by : Bill Prady, Steven Molaro & Steve Holland	October 6, 2011 (2011-10-06)	3X6854	13.92^[104]
92	5	"The Russian Rocket Reaction"	Mark Cendrowski	Story by : Bill Prady, Steven Molaro & Jim Reynolds Teleplay by : Chuck Lorre, Eric Kaplan & Maria Ferrari	October 13, 2011 (2011-10-13)	3X6855	13.58^[105]
93	6	"The Rhinitis Revelation"	Howard Murray	Story by : Chuck Lorre, Eric Kaplan & Steve Holland Teleplay by : Bill Prady, Steven Molaro & Jim Reynolds	October 20, 2011 (2011-10-20)	3X6856	14.93^[106]
94	7	"The Good Guy Fluctuation"	Mark Cendrowski	Story by : Chuck Lorre, Dave Goetsch & Maria Ferrari Teleplay by : Bill Prady, Steven Molaro & Steve Holland	October 27, 2011 (2011-10-27)	3X6857	14.54^[107]
95	8	"The Isolation Permutation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Tara Hernandez Teleplay by : Bill Prady, Steven Molaro & Steve Holland	November 3, 2011 (2011-11-03)	3X6858	15.98^[108]
96	9	"The Ornithophobia Diffusion"	Mark Cendrowski	Story by : Chuck Lorre, Dave Goetsch & Anthony Del Broccolo Teleplay by : Bill Prady, Steven Molaro & Eric Kaplan	November 10, 2011 (2011-11-10)	3X6859	15.89^[109]
97	10	"The Flaming Spittoon Acquisition"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Dave Goetsch Teleplay by : Bill Prady, Jim Reynolds & Steve Holland	November 17, 2011 (2011-11-17)	3X6860	15.05^[110]
98	11	"The Speckerman Recurrence"	Anthony Rich	Story by : Chuck Lorre, Bill Prady & Steve Holland Teleplay by : Steven Molaro, Eric Kaplan & Anthony Del Broccolo	December 8, 2011 (2011-12-08)	3X6861	14.02^[111]
99	12	"The Shiny Trinket Maneuver"	Mark Cendrowski	Story by : Chuck Lorre, Steve Holland & Tara Hernandez Teleplay by : Bill Prady, Steven Molaro & Jim Reynolds	January 12, 2012 (2012-01-12)	3X6862	16.13^[112]
100	13	"The Recombination Hypothesis"	Mark Cendrowski	Story by : Chuck Lorre Teleplay by : Bill Prady & Steven Molaro	January 19, 2012 (2012-01-19)	3X6863	15.83^[113]
101	14	"The Beta Test Initiation"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Eric Kaplan Teleplay by : Bill Prady, Dave Goetsch & Maria Ferrari	January 26, 2012 (2012-01-26)	3X6864	16.13^[114]
102	15	"The Friendship Contraction"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Bill Prady, Steven Molaro & Steve Holland	February 2, 2012 (2012-02-02)	3X6865	16.54^[115]
103	16	"The Vacation Solution"	Mark Cendrowski	Story by : Chuck Lorre, Anthony Del Broccolo & Tara Hernandez Teleplay by : Bill Prady, Steven Molaro & Maria Ferrari	February 9, 2012 (2012-02-09)	3X6866	16.21^[116]
104	17	"The Rothman Disintegration"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Steve Holland Teleplay by : Steven Molaro, Eric Kaplan & Jim Reynolds	February 16, 2012 (2012-02-16)	3X6867	15.65^[117]
105	18	"The Werewolf Transformation"	Mark Cendrowski	Story by : Chuck Lorre, Todd Craig & Gary Torvinen Teleplay by : Bill Prady, Steven Molaro, Jim Reynolds & Maria Ferrari	February 23, 2012 (2012-02-23)	3X6868	16.20^[118]
106	19	"The Weekend Vortex"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Tara Hernandez Teleplay by : Steven Molaro, Eric Kaplan & Steve Holland	March 8, 2012 (2012-03-08)	3X6869	15.04^[119]
107	20	"The Transporter Malfunction"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Maria Ferrari Teleplay by : Steven Molaro, Jim Reynolds & Steve Holland	March 29, 2012 (2012-03-29)	3X6870	13.96^[120]
108	21	"The Hawking Excitation"	Mark Cendrowski	Story by : Bill Prady, Steven Molaro & Steve Holland Teleplay by : Chuck Lorre, Eric Kaplan & Maria Ferrari	April 5, 2012 (2012-04-05)	3X6871	13.29^[121]
109	22	"The Stag Convergence"	Peter Chakos	Story by : Billy Prady, Steve Holland & Eric Kaplan Teleplay by : Chuck Lorre, Steven Molaro & Jim Reynolds	April 26, 2012 (2012-04-26)	3X6872	12.65^[122]
110	23	"The Launch Acceleration"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Jim Reynolds Teleplay by : Bill Prady, Steve Holland & Maria Ferrari	May 3, 2012 (2012-05-03)	3X6873	13.91^[123]
111	24	"The Countdown Reflection"	Mark Cendrowski	Story by : Bill Prady, Eric Kaplan & Steve Holland Teleplay by : Chuck Lorre, Steven Molaro & Jim Reynolds	May 10, 2012 (2012-05-10)	3X6874	13.72^[124]

Season 6 (2012–13)

Main article: The Big Bang Theory (season 6)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
112	1	"The Date Night Variable"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Steve Holland Teleplay by : Steven Molaro, Jim Reynolds & Maria Ferrari	September 27, 2012 (2012-09-27)	3X7601	15.66^[125]
113	2	"The Decoupling Fluctuation"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro, Eric Kaplan & Steve Holland	October 4, 2012 (2012-10-04)	3X7602	15.18^[126]
114	3	"The Higgs Boson Observation"	Mark Cendrowski	Story by : Steven Molaro, Dave Goetsch & Steve Holland Teleplay by : Chuck Lorre, Jim Reynolds & Maria Ferrari	October 11, 2012 (2012-10-11)	3X7603	14.23^[127]
115	4	"The Re-Entry Minimization"	Mark Cendrowski	Story by : Bill Prady, Jim Reynolds & Anthony Del Broccolo Teleplay by : Chuck Lorre, Steven Molaro & Eric Kaplan	October 18, 2012 (2012-10-18)	3X7604	15.73^[128]
116	5	"The Holographic Excitation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jeremy Howe Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	October 25, 2012 (2012-10-25)	3X7605	15.82^[129]
117	6	"The Extract Obliteration"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Steve Holland Teleplay by : Steven Molaro, Jim Reynolds & Eric Kaplan	November 1, 2012 (2012-11-01)	3X7606	15.90^[130]
118	7	"The Habitation Configuration"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	November 8, 2012 (2012-11-08)	3X7607	16.68^[131]
119	8	"The 43 Peculiarity"	Mark Cendrowski	Story by : Chuck Lorre, Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro, Jim Reynolds & Steve Holland	November 15, 2012 (2012-11-15)	3X7608	17.63^[132]
120	9	"The Parking Spot Escalation"	Peter Chakos	Story by : Chuck Lorre, Eric Kaplan & Adam Faberman Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	November 29, 2012 (2012-11-29)	3X7609	17.25^[133]
121	10	"The Fish Guts Displacement"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady & Tara Hernandez Teleplay by : Steven Molaro, Eric Kaplan & Jim Reynolds	December 6, 2012 (2012-12-06)	3X7610	16.94^[134]
122	11	"The Santa Simulation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Steve Holland Teleplay by : Steven Molaro, Jim Reynolds & Maria Ferrari	December 13, 2012 (2012-12-13)	3X7611	16.77^[135]
123	12	"The Egg Salad Equivalency"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro, Bill Prady & Steve Holland	January 3, 2013 (2013-01-03)	3X7612	19.25^[136]
124	13	"The Bakersfield Expedition"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds & Steve Holland Teleplay by : Steven Molaro, Eric Kaplan & Maria Ferrari	January 10, 2013 (2013-01-10)	3X7613	20.00^[137]
125	14	"The Cooper/Kripke Inversion"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Anthony Del Broccolo Teleplay by : Steven Molaro, Jim Reynolds & Steve Holland	January 31, 2013 (2013-01-31)	3X7614	17.76^[138]
126	15	"The Spoiler Alert Segmentation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan and Steve Holland Teleplay by : Steven Molaro, Maria Ferrari & Adam Faberman	February 7, 2013 (2013-02-07)	3X7615	18.98^[139]
127	16	"The Tangible Affection Proof"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady and Steve Holland Teleplay by : Steven Molaro, Jim Reynolds & Tara Hernandez	February 14, 2013 (2013-02-14)	3X7616	17.89^[140]
128	17	"The Monster Isolation"	Mark Cendrowski	Story by : Chuck Lorre, Dave Goetsch and Maria Ferrari Teleplay by : Steven Molaro, Eric Kaplan and Steve Holland	February 21, 2013 (2013-02-21)	3X7617	17.62^[141]
129	18	"The Contractual Obligation Implementation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan and Steve Holland Teleplay by : Steven Molaro, Jim Reynolds and Maria Ferrari	March 7, 2013 (2013-03-07)	3X7618	17.63^[142]
130	19	"The Closet Reconfiguration"	Anthony Rich	Story by : Chuck Lorre, Jim Reynolds and Maria Ferrari Teleplay by : Steven Molaro, Steve Holland and Eric Kaplan	March 14, 2013 (2013-03-14)	3X7619	15.90^[143]
131	20	"The Tenure Turbulence"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan and Maria Ferrari Teleplay by : Chuck Lorre, Steve Holland and Jim Reynolds	April 4, 2013 (2013-04-04)	3X7620	17.24^[144]
132	21	"The Closure Alternative"	Mark Cendrowski	Story by : Chuck Lorre, Bill Prady and Tara Hernandez Teleplay by : Steven Molaro, Jim Reynolds and Steve Holland	April 25, 2013 (2013-04-25)	3X7621	15.05^[145]
133	22	"The Proton Resurgence"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds and Steve Holland Teleplay by : Steven Molaro, Eric Kaplan and Maria Ferrari	May 2, 2013 (2013-05-02)	3X7622	16.29^[146]
134	23	"The Love Spell Potential"	Anthony Rich	Story by : Chuck Lorre, Jim Reynolds and Maria Ferrari Teleplay by : Steven Molaro, Eric Kaplan and Steve Holland	May 9, 2013 (2013-05-09)	3X7623	16.30^[147]
135	24	"The Bon Voyage Reaction"	Mark Cendrowski	Story by : Steven Molaro, Steve Holland and Tara Hernandez Teleplay by : Chuck Lorre, Jim Reynolds and Maria Ferrari	May 16, 2013 (2013-05-16)	3X7624	15.48^[148]

Season 7 (2013–14)

Main article: The Big Bang Theory (season 7)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
136	1	"The Hofstadter Insufficiency"	Mark Cendrowski	Story by : Chuck Lorre, Steven Molaro & Tara Hernandez Teleplay by : Eric Kaplan, Jim Reynolds & Steve Holland	September 26, 2013 (2013-09-26)	4X5301	18.99^[149]
137	2	"The Deception Verification"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	September 26, 2013 (2013-09-26)	4X5302	20.44^[149]
138	3	"The Scavenger Vortex"	Mark Cendrowski	Story by : Dave Goetsch, Eric Kaplan & Steve Holland Teleplay by : Steven Molaro, Jim Reynolds & Maria Ferrari	October 3, 2013 (2013-10-03)	4X5303	18.22^[150]
139	4	"The Raiders Minimization"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro, Jim Reynolds & Maria Ferrari	October 10, 2013 (2013-10-10)	4X5304	17.64^[151]
140	5	"The Workplace Proximity"	Mark Cendrowski	Story by : Steven Molaro, Steve Holland & Maria Ferrari Teleplay by : Chuck Lorre, Eric Kaplan & Jim Reynolds	October 17, 2013 (2013-10-17)	4X5305	17.80^[152]
141	6	"The Romance Resonance"	Mark Cendrowski	Story by : Eric Kaplan, Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	October 24, 2013 (2013-10-24)	4X5306	16.98^[153]
142	7	"The Proton Displacement"	Mark Cendrowski	Story by : Chuck Lorre, Maria Ferrari & Anthony Del Broccolo Teleplay by : Steven Molaro, Eric Kaplan & Jim Reynolds	November 7, 2013 (2013-11-07)	4X5307	16.89^[154]
143	8	"The Itchy Brain Simulation"	Mark Cendrowski	Story by : Steven Molaro, Bill Prady & Jim Reynolds Teleplay by : Eric Kaplan, Steve Holland & Maria Ferrari	November 14, 2013 (2013-11-14)	4X5308	18.30^[155]
144	9	"The Thanksgiving Decoupling"	Mark Cendrowski	Story by : Eric Kaplan, Steve Holland & Maria Ferrari Teleplay by : Steven Molaro, Jim Reynolds & Jeremy Howe	November 21, 2013 (2013-11-21)	4X5309	18.94^[156]
145	10	"The Discovery Dissipation"	Mark Cendrowski	Story by : Eric Kaplan, Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro, Steve Holland & Adam Faberman	December 5, 2013 (2013-12-05)	4X5310	15.63^[157]
146	11	"The Cooper Extraction"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan & Maria Ferrari Teleplay by : Jim Reynolds, Steve Holland & Tara Hernandez	December 12, 2013 (2013-12-12)	4X5311	17.68^[158]
147	12	"The Hesitation Ramification"	Mark Cendrowski	Story by : Dave Goetsch, Jim Reynolds & Tara Hernandez Teleplay by : Steve Molaro, Steve Holland & Maria Ferrari	January 2, 2014 (2014-01-02)	4X5312	19.20^[159]
148	13	"The Occupation Recalibration"	Mark Cendrowski	Story by : Eric Kaplan, Maria Ferrari & Tara Hernandez Teleplay by : Steve Molaro, Jim Reynolds & Steve Holland	January 9, 2014 (2014-01-09)	4X5313	20.35^[160]
149	14	"The Convention Conundrum"	Mark Cendrowski	Story by : Eric Kaplan, Jim Reynolds & Adam Faberman Teleplay by : Steven Molaro, Dave Goetsch & Steve Holland	January 30, 2014 (2014-01-30)	4X5315	19.05^[161]
150	15	"The Locomotive Manipulation"	Mark Cendrowski	Story by : Jim Reynolds, Steve Holland & Tara Hernandez Teleplay by : Steven Molaro, Eric Kaplan & Maria Ferrari	February 6, 2014 (2014-02-06)	4X5314	17.53^[162]
151	16	"The Table Polarization"	Gay Linvill	Story by : Steven Molaro, Maria Ferrari & Tara Hernandez Teleplay by : Chuck Lorre, Jim Reynolds & Steve Holland	February 27, 2014 (2014-02-27)	4x5316	17.73^[163]
152	17	"The Friendship Turbulence"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan & Tara Hernandez Teleplay by : Jim Reynolds, Steve Holland & Maria Ferrari	March 6, 2014 (2014-03-06)	4X5318	18.09^[164]
153	18	"The Mommy Observation"	Mark Cendrowski	Story by : Jim Reynolds, Steve Holland & Maria Ferrari Teleplay by : Steven Molaro, Eric Kaplan & Anthony Del Broccolo	March 13, 2014 (2014-03-13)	4x5319	17.34^[165]
154	19	"The Indecision Amalgamation"	Anthony Rich	Story by : Bill Prady, Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro, Dave Goetsch & Steve Holland	April 3, 2014 (2014-04-03)	4x5320	17.73^[166]
155	20	"The Relationship Diremption"	Mark Cendrowski	Story by : Steven Molaro, Bill Prady & Jim Reynolds Teleplay by : Chuck Lorre, Eric Kaplan & Steve Holland	April 10, 2014 (2014-04-10)	4X5321	16.49^[167]
156	21	"The Anything Can Happen Recurrence"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan & Adam Faberman Teleplay by : Jim Reynolds, Steve Holland & Tara Hernandez	April 24, 2014 (2014-04-24)	4x5322	16.44^[168]
157	22	"The Proton Transmogrification"	Mark Cendrowski	Story by : Jim Reynolds, Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro, Eric Kaplan & Steve Holland	May 1, 2014 (2014-05-01)	4X5317^[169]	16.07^[170]
158	23	"The Gorilla Dissolution"	Peter Chakos	Story by : Chuck Lorre, Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro, Steve Holland & Eric Kaplan	May 8, 2014 (2014-05-08)	4x5323	14.42^[171]
159	24	"The Status Quo Combustion"	Mark Cendrowski	Story by : Eric Kaplan, Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro, Steve Holland & Tara Hernandez	May 15, 2014 (2014-05-15)	4X5324	16.73^[172]

Season 8 (2014–15)

Main article: The Big Bang Theory (season 8)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
160	1	"The Locomotion Interruption"	Mark Cendrowski	Story by : Jim Reynolds, Maria Ferrari & Tara Hernandez Teleplay by : Steven Molaro, Steve Holland & Eric Kaplan	September 22, 2014 (2014-09-22)	4X6751	18.08^[173]
161	2	"The Junior Professor Solution"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan & Steve Holland Teleplay by : Jim Reynolds, Maria Ferrari & Tara Hernandez	September 22, 2014 (2014-09-22)	4X6752	18.30^[173]
162	3	"The First Pitch Insufficiency"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds & Anthony Del Broccolo Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	September 29, 2014 (2014-09-29)	4X6753	16.44^[174]
163	4	"The Hook-Up Reverberation"	Mark Cendrowski	Story by : Steve Holland, Maria Ferrari & Tara Hernandez Teleplay by : Steven Molaro, Eric Kaplan & Jim Reynolds	October 6, 2014 (2014-10-06)	4X6754	15.94^[175]
164	5	"The Focus Attenuation"	Mark Cendrowski	Story by : Jim Reynolds, Maria Ferrari & Adam Faberman Teleplay by : Steven Molaro, Eric Kaplan & Steve Holland	October 13, 2014 (2014-10-13)	4X6755	15.63^[176]
165	6	"The Expedition Approximation"	Mark Cendrowski	Story by : Steven Molaro, Dave Goetsch & Tara Hernandez Teleplay by : Jim Reynolds, Steve Holland & Maria Ferrari	October 20, 2014 (2014-10-20)	4X6756	16.02^[177]
166	7	"The Misinterpretation Agitation"	Mark Cendrowski	Story by : Chuck Lorre, Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro, Steve Holland & Maria Ferrari	October 30, 2014 (2014-10-30)	4X6758	16.25^[178]
167	8	"The Prom Equivalency"	Mark Cendrowski	Story by : Jim Reynolds, Steve Holland, Jeremy Howe Teleplay by : Steve Molaro, Eric Kaplan, Maria Ferrari	November 6, 2014 (2014-11-06)	4X6757	16.56^[179]
168	9	"The Septum Deviation"	Anthony Rich	Story by : Steven Molaro, Bill Prady and Maria Ferrari Teleplay by : Eric Kaplan, Steve Holland and Tara Hernandez	November 13, 2014 (2014-11-13)	4X6759	16.90^[180]
169	10	"The Champagne Reflection"	Mark Cendrowski	Story by : Steven Molaro, Tara Hernandez and David Saltzberg, Ph.D Teleplay by : Jim Reynolds, Steve Holland and Dave Goetsch	November 20, 2014 (2014-11-20)	4X6760	14.61^[181]
170	11	"The Clean Room Infiltration"	Mark Cendrowski	Story by : Maria Ferrari, Tara Hernandez, & Jeremy Howe Teleplay by : Eric Kaplan, Jim Reynolds, & Steve Holland	December 11, 2014 (2014-12-11)	4X6761	15.49^[182]
171	12	"The Space Probe Disintegration"	Mark Cendrowski	Story by : Bill Prady, Eric Kaplan, & Jim Reynolds Teleplay by : Steven Molaro, Steve Holland, & Maria Ferrari	January 8, 2015 (2015-01-08)	4X6762	18.11^[183]
172	13	"The Anxiety Optimization"	Mark Cendrowski	Story by : Eric Kaplan, Maria Ferrari & Adam Faberman Teleplay by : Jim Reynolds, Steve Holland & Tara Hernandez	January 29, 2015 (2015-01-29)	4X6763	17.25^[184]
173	14	"The Troll Manifestation"	Mark Cendrowski	Story by : Steven Molaro, Eric Kaplan & Tara Hernandez Teleplay by : Jim Reynolds, Steve Holland & Maria Ferrari	February 5, 2015 (2015-02-05)	4X6765	17.09^[185]
174	15	"The Comic Book Store Regeneration"	Mark Cendrowski	Story by : Jim Reynolds, Maria Ferrari and Jeremy Howe Teleplay by : Steven Molaro, Eric Kaplan and Steve Holland	February 19, 2015 (2015-02-19)	4X6764	17.49^[186]
175	16	"The Intimacy Acceleration"	Mark Cendrowski	Story by : Dave Goetsch, Eric Kaplan and Tara Hernandez Teleplay by : Steve Molaro, Jim Reynolds, and Steve Holland	February 26, 2015 (2015-02-26)	4X6766	16.67^[187]
176	17	"The Colonization Application"	Mark Cendrowski	Story by : Dave Goetsch, Jim Reynolds and Tara Hernandez Teleplay by : Steve Molaro, Eric Kaplan and Maria Ferrari	March 5, 2015 (2015-03-05)	4X6767	18.17^[188]
177	18	"The Leftover Thermalization"	Mark Cendrowski	Story by : Steven Molaro, Maria Ferrari and Jeremy Howe Teleplay by : Eric Kaplan, Jim Reynolds and Steve Holland	March 12, 2015 (2015-03-12)	4X6768	16.13^[189]
178	19	"The Skywalker Incursion"	Mark Cendrowski	Story by : Jim Reynolds, Tara Hernandez, Jeremy Howe Teleplay by : Steve Molaro, Steve Holland, Maria Ferrari	April 2, 2015 (2015-04-02)	4X6769	13.89^[190]
179	20	"The Fortification Implementation"	Mark Cendrowski	Story by : Jim Reynolds, Saladin Patterson, Tara Hernandez Teleplay by : Steven Molaro, Steve Holland, Maria Ferrari	April 9, 2015 (2015-04-09)	4X6770	14.78^[191]
180	21	"The Communication Deterioration"	Mark Cendrowski	Story by : Dave Goetsch, Steve Holland, Jeremy Howe, Tara Hernandez Teleplay by : Steven Molaro, Eric Kaplan, Jim Reynolds	April 16, 2015 (2015-04-16)	4X6771	14.82^[192]
181	22	"The Graduation Transmission"	Anthony Rich	Story by : Chuck Lorre, Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro, Steve Holland & Eric Kaplan	April 23, 2015 (2015-04-23)	4X6772	14.63^[193]
182	23	"The Maternal Combustion"	Anthony Rich	Story by : Steven Molaro, Tara Hernandez & Jeremy Howe Teleplay by : Chuck Lorre, Jim Reynolds & Maria Ferrari	April 30, 2015 (2015-04-30)	4X6773	13.85^[194]
183	24	"The Commitment Determination"	Mark Cendrowski	Story by : Chuck Lorre, Jim Reynolds, Maria Ferrari Teleplay by : Steven Molaro, Steve Holland, Eric Kaplan	May 7, 2015 (2015-05-07)	4X6774	14.64^[195]

Season 9 (2015–16)

Main article: The Big Bang Theory (season 9)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
184	1	"The Matrimonial Momentum"	Mark Cendrowski	Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro, Steve Holland & Eric Kaplan	September 21, 2015 (2015-09-21)	4X7201	18.20^[196]
185	2	"The Separation Oscillation"	Mark Cendrowski	Story by : Steven Molaro & Steve Holland & Tara Hernandez Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari	September 28, 2015 (2015-09-28)	4X7202	15.23^[197]
186	3	"The Bachelor Party Corrosion"	Mark Cendrowski	Story by : Dave Goetsch & Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan	October 5, 2015 (2015-10-05)	4X7203	15.40^[198]
187	4	"The 2003 Approximation"	Mark Cendrowski	Story by : Chuck Lorre & Steve Holland & Eric Kaplan Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez	October 12, 2015 (2015-10-12)	4X7204	14.96^[199]
188	5	"The Perspiration Implementation"	Mark Cendrowski	Story by : Chuck Lorre & Eric Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Saladin Patterson	October 19, 2015 (2015-10-19)	4X7205	14.68^[200]
189	6	"The Helium Insufficiency"	Mark Cendrowski	Story by : Steve Holland & Maria Ferrari & Anthony Del Broccolo Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds	October 26, 2015 (2015-10-26)	4X7207	16.32^[201]
190	7	"The Spock Resonance"	Nikki Lorre	Story by : Chuck Lorre & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe	November 5, 2015 (2015-11-05)	4X7206	14.81^[202]
191	8	"The Mystery Date Observation"	Mark Cendrowski	Story by : Steven Molaro & Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez	November 12, 2015 (2015-11-12)	4X7208	14.92^[203]
192	9	"The Platonic Permutation"	Mark Cendrowski	Story by : Jim Reynolds & Jeremy Howe & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Adam Faberman	November 19, 2015 (2015-11-19)	4X7209	15.19^[204]
193	10	"The Earworm Reverberation"	Mark Cendrowski	Story by : Eric Kaplan & Jim Reynolds & Saladin Patterson Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe	December 10, 2015 (2015-12-10)	4X7210	15.27^[205]
194	11	"The Opening Night Excitation"	Mark Cendrowski	Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari	December 17, 2015 (2015-12-17)	4X7211	17.23^[206]
195	12	"The Sales Call Sublimation"	Mark Cendrowski	Story by : Steve Holland & Jim Reynolds & Saladin K. Patterson Teleplay by : Steven Molaro & Maria Ferrari & Anthony Del Broccolo	January 7, 2016 (2016-01-07)	4X7212	15.85^[207]
196	13	"The Empathy Optimization"	Mark Cendrowski	Story by : Chuck Lorre & Eric Kaplan & Dave Geotsch Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson	January 14, 2016 (2016-01-14)	4X7213	15.75^[208]
197	14	"The Meemaw Materialization"	Mark Cendrowski	Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez	February 4, 2016 (2016-02-04)	4X7214	15.29^[209]
198	15	"The Valentino Submergence"	Mark Cendrowski	Story by : Steve Molaro & Jim Reynolds & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jeremy Howe	February 11, 2016 (2016-02-11)	4X7215	16.25^[210]
199	16	"The Positive Negative Reaction"	Mark Cendrowski	Story by : Eric Kaplan & Jim Reynolds & Saladin Patterson Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari	February 18, 2016 (2016-02-18)	4X7216	15.24^[211]
200	17	"The Celebration Experimentation"	Mark Cendrowski	Story by : Chuck Lorre & Eric Kaplan & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez	February 25, 2016 (2016-02-25)	4X7217	15.94^[212]
201	18	"The Application Deterioration"	Mark Cendrowski	Story by : Steven Molaro & Eric Kaplan & Adam Faberman Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari	March 10, 2016 (2016-03-10)	4X7218	14.68^[213]
202	19	"The Solder Excursion Diversion"	Mark Cendrowski	Story by : Bill Prady & Eric Kaplan & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson	March 31, 2016 (2016-03-31)	4X7219	14.24^[214]
203	20	"The Big Bear Precipitation"	Mark Cendrowski	Story by : Chuck Lorre & Dave Goetsch & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Jim Reynolds	April 7, 2016 (2016-04-07)	4X7220	13.50^[215]
204	21	"The Viewing Party Combustion"	Mark Cendrowski	Story by : Eric Kaplan & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez	April 21, 2016 (2016-04-21)	4X7221	14.16^[216]
205	22	"The Fermentation Bifurcation"	Nikki Lorre	Story by : Steven Molaro & Jim Reynolds & Anthony Del Broccolo Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez	April 28, 2016 (2016-04-28)	4X7222	14.13^[217]
206	23	"The Line Substitution Solution"	Anthony Rich	Story by : Steve Holland & Saladin K. Patterson & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari	May 5, 2016 (2016-05-05)	4X7223	13.22^[218]
207	24	"The Convergence Convergence"	Mark Cendrowski	Story by : Steven Molaro & Tara Hernandez & Adam Faberman Teleplay by : Chuck Lorre & Steve Holland & Jeremy Howe	May 12, 2016 (2016-05-12)	4X7224	14.73^[219]

Season 10 (2016)

Main article: The Big Bang Theory (season 10)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
208	1	"The Conjugal Conjecture"	Mark Cendrowski	Story by : Chuck Lorre & Steve Holland & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds	September 19, 2016 (2016-09-19)	T12.15303	15.82^[220]
209	2	"The Military Miniaturization"	Mark Cendrowski	Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari	September 26, 2016 (2016-09-26)	T12.15301	14.24^[221]
210	3	"The Dependence Transcendence"	Mark Cendrowski	Story by : Steven Molaro & Saladin K. Patterson & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe	October 3, 2016 (2016-10-03)	T12.15302	14.32^[222]
211	4	"The Cohabitation Experimentation"	Mark Cendrowski	Story by : Chuck Lorre & Dave Goetsch & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez	October 10, 2016 (2016-10-10)	T12.15304	14.41^[223]
212	5	"The Hot Tub Contamination"	Mark Cendrowski	Story by : Chuck Lorre & Maria Ferrari & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jim Reynolds	October 17, 2016 (2016-10-17)	T12.15305	14.20^[224]
213	6	"The Fetal Kick Catalyst"	Mark Cendrowski	Story by : Steve Holland & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Saladin K. Patterson & Anthony Del Broccolo	October 27, 2016 (2016-10-27)	T12.15306	14.31^[225]
214	7	"The Veracity Elasticity"	Mark Cendrowski	Story by : Steven Molaro & Eric Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Adam Faberman	November 3, 2016 (2016-11-03)	T12.15307	14.18^[226]
215	8	"The Brain Bowl Incubation"	Mark Cendrowski	Story by : Chuck Lorre & Steve Holland & Saladin K. Patterson Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez	November 10, 2016 (2016-11-10)	T12.15308	14.47^[227]
216	9	"The Geology Elevation"	Mark Cendrowski	Story by : Chuck Lorre & Erik Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Jeremy Howe	November 17, 2016 (2016-11-17)	T12.15309	14.34^[228]
217	10	"The Property Division Collision"	Mark Cendrowski	Story by : Steve Holland, Bill Prady & Steve Goetsch Teleplay by : Steven Molaro, Maria Ferrari & Tara Hernandez	December 1, 2016 (2016-12-01)	T12.15310	14.54^[229]
218	11	"The Birthday Synchronicity"^[230]	Nikki Lorre	Story by : Chuck Lorre & Steve Holland & Maria Ferrari Teleplay by : Steve Molaro & Eric Kaplan & Tara Hernandez	December 15, 2016 (2016-12-15)	T12.15311	TBD

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↑ Gorman, Bill (April 1, 2011). "Thursday Final Ratings: 'American Idol,' 'Big Bang Theory,' 'Rules Of Engagement,' 'CSI,' 'Grey's Anatomy' Adjusted Up". TV by the Numbers. Retrieved April 1, 2011.
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↑ Gorman, Bill (April 29, 2011). "Thursday Final Ratings: 'Idol,' 'Grey's,' 'Big Bang,' 'CSI' Adjusted Up; 'Community' Down + 'The Office,' 'Parks & Rec' Finals". TV by the Numbers. Retrieved April 29, 2011.
↑ Seidman, Robert (May 6, 2011). "Thursday Final Ratings: 'American Idol,' 'Big Bang Theory,' 'CSI,' 'The Mentalist,' 'Community,' 'The Vampire Diaries' Adjusted Up; 'Bones,' 'Parks & Recreation' Adjusted Down". TV by the Numbers. Retrieved May 6, 2011.
↑ Gorman, Bill (May 13, 2011). "Thursday Final Ratings: 'American Idol,' 'Big Bang,' 'Community,' 'Rules,' 'Mentalist,' 'Office,' 'Vampire Diaries' Adjusted Up; 'Bones' Adjusted Down". TV by the Numbers. Retrieved May 14, 2011.
↑ Seidman, Robert (May 20, 2011). "Thursday Final Ratings: 'American Idol,' 'Big Bang,' 'The Office,' 'Grey's,' 'Mentalist' Adjusted Up". TV by the Numbers. Retrieved May 20, 2011.
1 2 Seidman, Robert (September 23, 2011). "Thursday Finals: 'Big Bang Theory,' 'The X Factor,' 'Parks & Recreation' and 'Whitney' Adjusted Up". TVbytheNumbers.com. Retrieved September 29, 2011.
↑ Gorman, Bill (September 29, 2011). "Thursday Final Ratings: 'X Factor,' 'The Big Bang Theory,' 'Grey's Anatomy,' 'The Office,' 'The Secret Circle' & 'Mentalist' Adjusted Up". tvbythenumbers.zap2it.com. Retrieved October 1, 2011.
↑ Seidman, Robert (October 8, 2011). "Thursday Final Ratings: 'X Factor,' 'The Big Bang Theory,' 'Grey's Anatomy,' 'The Office,' 'Person of Interest,' 'Parks & Rec' Adjusted Up; 'Private Practice' Down". tvbythenumbers.zap2it.com. Retrieved October 8, 2011.
↑ "TV Ratings Thursday: 'X Factor' Drops, Still Leads Fox Win; On A Mixed Night Of Advances & Declines". Retrieved October 14, 2011.
↑ Seidman, Robert (October 21, 2011). "Thursday Final Ratings: World Series + 'Big Bang,' 'Grey's,' 'Vampire Diaries' Adjusted Up; 'Rules,' 'Private Practice' Adjusted Down". TV by the Numbers. Retrieved October 21, 2011.
↑ Gorman, Bill (October 28, 2011). "Thursday Final Ratings: World Series Game 6 Finals + 'Big Bang,' 'Vampire Diaries,' 'Office,' 'Person,' Adjusted Up; 'Rules,' 'Secret Circle,' 'Whitney,' 'Prime Suspect' Adjusted Down". TV by the Numbers. Retrieved October 28, 2011.
↑ Seidman, Robert (November 3, 2011). "Thursday Final Ratings: 'Big Bang Theory,' 'The X Factor,' 'Parks & Recreation,' 'The Office,' 'Vampire Diaries,' 'Grey's Anatomy' Adjusted Up". TV by the Numbers. Retrieved November 4, 2011.
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↑ Gorman, Bill (December 9, 2011). "Thursday Final Ratings: 'Parks & Rec' Adjusted Up; 'Big Bang,' 'Rules,' 'Person of Interest,' 'Mentalist,' 'X Factor,' 'Bones' Adjusted Down". TV by the Numbers. Retrieved December 9, 2011.
↑ Seidman, Robert (January 13, 2012). "Thursday Final Ratings: 'Big Bang Theory' Adjusted Up; 'Private Practice' Adjusted Down". TV by the Numbers. Retrieved January 13, 2012.
↑ Gorman, Bill (January 20, 2012). "Thursday Final Ratings: 'Big Bang Theory' Tops 'American Idol' 1st Half Hour; 'Office,' 'Mentalist,' 'Grey's' Adj. Up; 'Person,' 'Rob,' 'Parks' Adj. Down". TV by the Numbers. Retrieved January 20, 2012.
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↑ Seidman, Robert (February 10, 2012). "Thursday Final Ratings: 'The Big Bang Theory,' 'American Idol,' 'Grey's Anatomy,' 'The Mentalist,' 'Vampire Diaries' Adjusted Up; 'Rob,' 'Private Practice,' 'The Finder,' 'Up All Night' Adjusted Down". TV by the Numbers. Retrieved February 10, 2012.
↑ Gorman, Bill (February 17, 2012). "Thursday Final Ratings: 'American Idol,' 'Vampire Diaries,' 'Grey's Anatomy,' 'Big Bang Theory,' '30 Rock,' 'Office' Adjusted Up; 'Person Of Interest,' 'Mentalist,' 'Secret Circle' Adjusted Down". Retrieved February 17, 2012.
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↑ Kondolojy, Amanda (March 30, 2012). "Thursday Final Ratings: 'American Idol',"The Big Bang Theory', 'Missing' and 'Vampire Diaries' Adjusted Up, 'Rules' and 'Touch' Adjusted Down". Retrieved March 30, 2012.
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↑ Kondolojy, Amanda (May 4, 2012). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol', 'Vampire Diaries', 'Grey's Anatomy' Adjusted Up; 'Secret Circle', 'The Mentalist', 'Scandal' Adjusted Down". Retrieved May 4, 2012.
↑ Kondolojy, Amanda (May 11, 2012). "Thursday Final Ratings: 'Big Bang Theory', 'Idol', 'Vampire Diaries', 'Office', 'Secret Circle', 'Grey's' Adjusted Up; 'Touch', 'Scandal' Adjusted Down". TV by the Numbers. Retrieved May 11, 2012.
↑ Kondolojy, Amanda (September 28, 2012). "Thursday Final Ratings: 'Big Bang Theory', 'Grey's Anatomy', Adjusted Up; 'Parks & Rec.', 'Up All Night', 'SNL: Weekend Update', 'The Office', 'Glee', 'Scandal', 'Rock Center' Adjusted Down". TV by the Numbers. Retrieved September 29, 2012.
↑ Bibel, Sara (October 5, 2012). "Thursday Final Ratings: 'The X Factor', 'Last Resort', '30 Rock', 'Grey's Anatomy', 'The Office' Adjusted Up; 'Two and a Half Men', 'Person of Interest', 'Scandal', 'Elementary', 'Rock Center' & 'The Next' Adjusted Down". TV by the Numbers. Retrieved October 5, 2012.
↑ Kondolojy, Amanda (October 12, 2012). "Thursday Final Ratings: 'The Big Bang Theory' and 'Two and a Half Men' Adjusted Up; 'Up All Night', 'Beauty and the Beast' and '30 Rock Adjusted Down; No Adjustment for 'The Vampire Diaries'". TV by the Numbers. Retrieved October 12, 2012.
↑ "Thursday Final Ratings: 'The Vampire Diaries', 'The Big Bang Theory', 'Grey's Anatomy' & 'The Office' Adjusted Up; '30 Rock', 'Up All Night' & 'Scandal' Adjusted Down Plus Final Baseball Numbers". TV by the Numbers. October 19, 2012. Retrieved October 19, 2012.
↑ Kondolojy, Amanda (October 26, 2012). "Thursday Final Ratings: 'Big Bang Theory', 'Grey's Anatomy', 'Vampire Diaries' Adjusted Up; 'Parks & Rec', 'Up All Night', 'Rock Center', '30 Rock', 'Person of Interest' & Beauty & the Beast' Adjusted Down". Retrieved October 26, 2012.
↑ Bibel, Sara (November 2, 2012). "Thursday Final Ratings:'The Big Bang Theory' Adjusted Up, 'Person of Interest' Adjusted Down". Retrieved November 2, 2012.
↑ Kondolojy, Amanda (November 9, 2012). "Thursday Final Ratings:'The Big Bang Theory', 'Vampire Diaries' & 'Grey's Anatomy' Adjusted Up, 'The Office', 'Parks & Rec', 'Scandal' & 'Rock Center' Adjusted Down". TV by the Numbers. Retrieved November 10, 2012.
↑ Bibel, Sara (November 16, 2012). "Thursday Final Ratings: 'The Big Bang Theory', 'Vampire Diaries', 'Grey's Anatomy' & 'The Office' Adjusted Up; 'Last Resort & 'Scandal' Adjusted Down". Retrieved November 16, 2012.
↑ Bibel, Sara (November 30, 2012). "Thursday Final Ratings: 'The Big Bang Theory' & 'Grey's Anatomy' Adjusted Up; 'The Vampire Diaries', 'Two and a Half Men' & 'Beauty and the Beast' Adjusted Down". Retrieved November 30, 2012.
↑ Kondolojy, Amanda (December 7, 2012). "Thursday Final Ratings: 'The X Factor', 'The Vampire Diaries' and 'Glee' Adjusted Up; 'Two and a Half Men', 'Elementary', 'Person of Interest' and 'Big Bang Theory' Adjusted Down". Retrieved December 7, 2012.
↑ Bibel, Sara (December 14, 2012). "Thursday Final Ratings: 'The Vampire Diaries' Adjusted Up; 'Last Resort', 'Two and a Half Men', 'Person of Interest', 'Grey's Anatomy' & 'Scandal' Adjusted Down". Retrieved December 14, 2012.
↑ Bibel, Sara (January 4, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'Mobbed' & 'Elementary' Adjusted Up; 'Two and a Half Men' Adjusted Down". Retrieved January 4, 2013.
↑ Kondolojy, Amanda (January 11, 2013). "Thursday Final Ratings: 'The Big Bang Theory', '30 Rock' & 'Grey's Anatomy' Adjusted Up; No Adjustment for 'Scandal'". Retrieved January 11, 2013.
↑ Kondolojy, Amanda (February 1, 2013). "Thursday Final Ratings: 'The Big Bang Theory' Adjusted Up; No Adjustments for 'Scandal', 'American Idol' or 'Do No Harm'". Retrieved February 1, 2013.
↑ Bibel, Sara (February 8, 2013). "Thursday Final Ratings: 'Community' & 'The Big Bang Theory' Adjusted Up; 'Person of Interest' & 'Elementary' Adjusted Down". Retrieved February 8, 2013.
↑ Bibel, Sara (February 15, 2013). "Thursday Final Ratings: 'Zero Hour', 'Big Bang Theory', 'Community', 'Idol', 'Elementary' & 'Grey's Anatomy' Adjusted Up; 'Scandal' Adjusted Down". Retrieved February 15, 2013.
↑ Bibel, Sara (February 22, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'Parks and Recreation', 'Grey's Anatomy' & 'Elementary' Adjusted Up; 'Beauty and the Beast' Adjusted Down". Retrieved February 22, 2013.
↑ Bibel, Sara (March 8, 2013). "Thursday Final Ratings: 'The Big Bang Theory' and 'American Idol' Adjusted Up; 'Glee' Adjusted Down". Retrieved March 8, 2013.
↑ Kondolojy, Amanda (March 15, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol' & 'Community' Adjusted Up; 'Elementary' Adjusted Down". Retrieved March 15, 2013.
↑ Bibel, Sara (April 5, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol', 'Grey's Anatomy', 'Two and a Half Men', 'The Office', & 'Wife Swap' Adjusted Up; 'Scandal' & 'The Mindy Project' Adjusted Down". Retrieved April 5, 2013.
↑ Kondolojy, Amanda (April 26, 2013). "Thursday Final Ratings: 'The Vampire Diaries', 'The Big Bang Theory' & 'American Idol' Adjusted Up". TV by the Numbers. Retrieved April 26, 2013.
↑ Bibel, Sara (May 3, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol', 'The Vampire Diaries', 'Two and a Half Men', 'Grey's Anatomy', 'Glee','Parks and Recreation' & 'Hannibal' Adjusted Up". TV by the Numbers. Retrieved May 3, 2013.
↑ Kondolojy, Amanda (May 10, 2013). "Thursday Final Ratings: 'Big Bang Theory', 'Grey's Anatomy', 'American Idol', 'Vampire Diaries', 'Two and a Half Men', 'Wipeout', & 'Elementary' Adjusted Up; 'Glee' Adjusted Down". Retrieved May 10, 2013.
↑ Kondolojy, Amanda (May 17, 2013). "Thursday Final Ratings: 'Hannibal', 'The Big Bang Theory', 'The Vampire Diaries', 'Grey's Anatomy' & 'Office' Retrospective Adjusted Up". Retrieved May 17, 2013.
1 2 Kondolojy, Amanda (September 27, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'The Michael J Fox Show' & 'The X Factor' Adjusted Up; 'The Crazy Ones' Adjusted Down". TV by the Numbers. Retrieved September 27, 2013.
↑ Bibel, Sara (October 4, 2013). "Thursday Final Ratings: 'Big Bang Theory', 'Grey's Anatomy' & 'The Originals' Adjusted Up; 'Parks And Recreation', 'Welcome to the Family', 'Sean Saves the World', 'Michael J. Fox Show', & 'Parenthood' Adjusted Down". TV by the Numbers. Retrieved October 4, 2013.
↑ Kondolojy, Amanda (October 11, 2013). "Thursday Final Ratings: 'The Big Bang Theory', 'The X Factor' & 'Glee' Adjusted Up; 'The Vampire Diaries' & 'The Millers' Adjusted Down". TV by the Numbers. Retrieved October 11, 2013.
↑ Bibel, Sara (October 18, 2013). "Thursday Final Ratings: 'The Big Bang Theory' & 'Grey's Anatomy' Adjusted Up; 'The Crazy Ones' & 'Elementary' Adjusted Down". TV by the Numbers. Retrieved October 18, 2013.
↑ Kondolojy, Amanda (October 25, 2013). "Thursday Final Ratings: 'The Big Bang Theory' & 'The Vampire Diaries' Adjusted Up; 'The Millers' and 'Scandal' Adjusted Down". TV by the Numbers. Retrieved October 25, 2013.
↑ Kondolojy, Amanda (November 8, 2013). "Thursday Final Ratings: 'Elementary', 'Scandal', 'The Vampire Diaries', & 'The Big Bang Theory' Adjusted Up; 'The Voice', 'The Millers', 'Sean Saves the World', 'Parenthood', & 'The Michael J Fox Show' Adjusted Down". TV by the Numbers. Retrieved November 8, 2013.
↑ Bibel, Sara (November 15, 2013). "Thursday Final Ratings: 'The Big Bang Theory' Adjusted Up; 'The X Factor', 'Parks and Recreation', 'The Millers', 'Sean Saves the World', 'Glee', 'The Michael J. Fox Show' & 'Parenthood' Adjusted Down". TV by the Numbers. Retrieved November 15, 2013.
↑ Kondolojy, Amanda (November 22, 2013). "Thursday Final Ratings: 'The Big Bang Theory' and 'Grey's Anatomy' Adjusted Up; 'The X Factor', 'Glee', and 'Reign' Adjusted Down". TV by the Numbers. Retrieved November 22, 2013.
↑ Kondolojy, Amanda (December 6, 2013). "Thursday Final Ratings: 'The Big Bang Theory' & 'The X Factor' Adjusted Up; 'Once Upon a Time in Wonderland', 'The Millers', 'Grey's Anatomy' & 'Scandal' Adjusted Down". TV by the Numbers. Retrieved December 6, 2013.
↑ Bibel, Sara (December 13, 2013). "Thursday Final Ratings: 'The Vampire Diaries' Adjusted Up; 'The Big Bang Theory', 'The Sing-Off', 'Once Upon a Time in Wonderland', 'The Millers', 'The Crazy Ones', 'Two and a Half Men' & 'Elementary' Adjusted Down". TV By the Numbers. Retrieved December 21, 2013.
↑ Kondolojy, Amanda (January 6, 2014). "Thursday Final Ratings: 'The Big Bang Theory', 'Two and a Half Men' & 'The Taste' Adjusted Up; 'The Millers' Adjusted Down". TV by the Numbers. Retrieved January 12, 2014.
↑ Bibel, Sara (January 10, 2014). "Thursday Final Ratings: 'The Big Bang Theory' & 'Parks and Recreation' Adjusted Up". TV by the Numbers. Retrieved January 10, 2014.
↑ Kondolojy, Amanda (January 31, 2014). "Thursday Final Ratings: 'Big Bang Theory', 'American Idol', 'The Taste', 'Vampire Diaries', 'Parks & Recreation', 'Two and a Half Men' Adjusted Up; 'The Millers', 'Elementary', & Reign' Adjusted Down". TV by the Numbers. Retrieved January 31, 2014.
↑ Bibel, Sara (February 7, 2014). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol', 'Two and a Half Men' & the Olympics Adjusted Up; 'The Millers' Adjusted Down". TV by the Numbers. Retrieved February 13, 2014.
↑ Kondolojy, Amanda (February 28, 2014). "Thursday Final Ratings: 'The Big Bang Theory', 'Scandal', 'Grey's Anatomy', 'American Idol' & 'Parks & Recreation' Adjusted Up; 'The Millers' Adjusted Down". TV by the Numbers. Retrieved February 28, 2014.
↑ Bibel, Sara (March 7, 2014). "Thursday Final Ratings: 'The Big Bang Theory', 'Once Upon A Time in Wonderland', 'Parks and Recreation' & 'Elementary' Adjusted Up; 'The Millers' & 'Two and a Half Men' Adjusted Down". TV by the Numbers. Retrieved March 7, 2014.
↑ Kondolojy, Amanda (March 14, 2014). "Thursday Final Ratings: 'Hell's Kitchen', 'Parks and Recreation' & 'Scandal' Adjusted Up; 'Reign', 'The Crazy Ones', 'Two and a Half Men' and 'The Millers' Adjusted Down". TV by the Numbers. Retrieved March 14, 2014.
↑ Adams, Bradley (April 4, 2014). "Final Adjusted TV Ratings for Thursday 3rd April 2014". SpoilerTV. Retrieved April 4, 2014.
↑ Kondolojy, Amanda (April 11, 2014). "Thursday Final Ratings: 'Community', 'Grey's Anatomy', 'Shark Tank', 'The Big Bang Theory' & 'American Idol' Adjusted Up; 'The Millers' & 'Elementary ' Adjusted Down". TV by the Numbers. Retrieved April 11, 2014.
↑ Kondolojy, Amanda (April 25, 2014). "Thursday Final Ratings: 'The Big Bang Theory' & 'The Vampire Diaries' Adjusted Up; 'The Millers' Adjusted Down". TV by the Numbers. Retrieved April 25, 2014.
↑ Prady, Bill (February 5, 2014). "Today! #bigbangtheory". Twitter. Retrieved May 1, 2014.
↑ Bibel, Sara (May 2, 2014). "Thursday Final Ratings: 'The Vampire Diaries' & 'The Big Bang Theory' Adjusted Up; 'The Millers' & 'Bad Teacher' Adjusted Down". TV by the Numbers. Retrieved May 2, 2014.
↑ Kondolojy, Amanda (May 9, 2014). "Thursday Final Ratings: 'Grey's Anatomy', 'The Big Bang Theory' & 'Black Box' Adjusted Up; 'The Millers' Adjusted Down". TV by the Numbers. Retrieved May 9, 2014.
↑ Bibel, Sara (May 16, 2014). "Thursday Final Ratings: 'The Big Bang Theory' & 'Grey's Anatomy' Adjusted Up; 'Reign' & 'The Millers' Adjusted Down". TV by the Numbers. Retrieved May 16, 2014.
1 2 Kondolojy, Amanda (October 12, 2014). "'Gotham' Has Biggest Adults 18–49 Ratings Increase; 'Gotham' & 'Red Band Society' Top Percentage Gains & 'How To Get Away With Murder' Tops Viewer Gains in Live +7 Ratings for Week Ending September 28". TV by the Numbers. Retrieved October 13, 2014.
↑ Kondolojy, Amanda (October 20, 2014). "'How to Get Away With Murder' Has Biggest Adults 18–49 Ratings Increase; 'Parenthood' Tops Percentage Gains & 'The Blacklist' Tops Viewer Gains in Live +7 Ratings for Week Ending October 5". TV by the Numbers. Retrieved October 20, 2014.
↑ "Revised Monday, October 6 Final Ratings: 'The Big Bang Theory', 'The Voice', 'Scorpion', 'NCIS: Los Angeles' Adjusted Up; 'Dancing With The Stars' & 'Castle' Adjusted Down - Ratings - TVbytheNumbers.Zap2it.com". TVbytheNumbers. Retrieved November 11, 2014.
↑ "TV Ratings Monday: 'The Voice' & 'The Blacklist' Up; 'Gotham' & 'Scorpion' Down, 'Castle', 'Sleepy Hollow' & 'The Originals' Steady, Decent Start for 'Jane The Virgin' - Ratings - TVbytheNumbers.Zap2it.com". TVbytheNumbers. Retrieved October 16, 2014.
↑ Kondolojy, Amanda (October 21, 2014). "Monday Final Ratings: 'The Big Bang Theory', 'The Voice' & 'Gotham' Adjusted Up; 'Jane the Virgin', 'The Originals', 'The Millers' & 'Castle' Adjusted Down". TV by the Numbers. Retrieved October 22, 2014.
↑ Bibel, Sara (October 31, 2014). "Thursday Final Ratings: 'The Vampire Diaries' & 'Scandal' Adjusted Up; 'Mom', 'Two and a Half Men', 'The McCarthys' & 'Elementary' Adjusted Down". TV by the Numbers. Retrieved October 31, 2014.
↑ "Thursday Final Ratings: 'The Vampire Diaries' & 'Big Bang Theory' Adjusted Up; 'Mom', 'The McCarthys', 'Two and a Half Men', 'Bad Judge', 'A to Z', 'Elementary', 'Parenthood' & 'The Biggest Loser' Adjusted Down - Ratings - TVbytheNumbers.Zap2it.com". TVbytheNumbers.
↑ Bibel, Sara (November 14, 2014). "Thursday Final Ratings: 'Bones' Adjusted Up; 'Mom', 'Two and a Half Men', 'The McCarthys' & 'Elementary' Adjusted Down". TV by the Numbers. Retrieved November 20, 2016.
↑ Kondolojy, Amanda (November 21, 2014). "Thursday Final Ratings: 'The Big Bang Theory' Adjusted Up; 'Gracepoint', 'Reign', 'Parenthood', 'Bad Judge', 'Mom', 'Two and a Half Men' 'The Biggest Loser' & 'A to Z' Adjusted Down". TV by the Numbers. Retrieved November 21, 2014.
↑ Bibel, Sara (December 12, 2014). "Thursday Final Ratings: 'The Vampire Diaries' Adjusted Up; 'The Big Bang Theory', 'Mom', 'Two and a Half Men', 'The McCarthys' & 'Elementary' Adjusted Down". TV by the Numbers. Retrieved December 12, 2014.
↑ Bibel, Sara (January 9, 2015). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol', 'Two and a Half Men' & 'Elementary' Adjusted Up; 'Mom' Adjusted Down". The Futon Critic. Retrieved January 9, 2015.
↑ Kondolojy, Amanda (January 30, 2015). "Thursday Final Ratings: 'Grey's Anatomy', 'The Big Bang Theory' & 'How to Get Away With Murder' Adjusted Up". TV by the Numbers. Retrieved January 30, 2015.
↑ Bibel, Sara (February 6, 2015). "Thursday Final Ratings: 'The Blacklist', 'Scandal', 'Grey's Anatomy' & 'The Big Bang Theory' Adjusted Up; 'The Vampire Diaries' Adjusted Down". TV by the Numbers. Retrieved February 6, 2015.
↑ Bibel, Sara (February 20, 2015). "Thursday Final Ratings: 'The Big Bang Theory,' 'Scandal', 'Two and a Half Men' & 'How To Get Away With Murder' Adjusted Up". TV by the Numbers. Retrieved February 20, 2015.
↑ Kondolojy, Amanda (February 27, 2015). "Thursday Final Ratings: 'The Blacklist' & 'American Idol' Adjusted Up". TV by the Numbers. Retrieved February 27, 2015.
↑ Bibel, Sara (March 6, 2015). "Thursday Final Ratings: 'The Big Bang Theory', 'American Idol' & 'The Blacklist' Adjusted Up". TV by the Numbers. Retrieved March 6, 2015.
↑ Kondolojy, Amanda (March 13, 2015). "Thursday Final Ratings: 'Scandal', 'American Idol', & 'Dateline' Adjusted Up; 'The Odd Couple', 'Mom' & 'Elementary' Adjusted Down". TV by the Numbers. Retrieved March 13, 2015.
↑ Bibel, Sara (April 3, 2015). "Thursday Final Ratings: 'The Big Bang Theory' & 'Grey's Anatomy' Adjusted Up". TV by the Numbers. Retrieved April 3, 2015.
↑ Kondolojy, Amanda (April 10, 2015). "Thursday Final Ratings: 'The Big Bang Theory' & 'Bones' Adjusted Up; 'Dateline' Adjusted Down". TV by the Numbers. Retrieved April 10, 2015.
↑ Bibel, Sara (April 17, 2015). "Thursday Final Ratings: 'The Big Bang Theory' & 'Backstrom' Adjusted Up; 'The Odd Couple' & 'Reign' Adjusted Down". TV by the Numbers. Retrieved April 18, 2015.
↑ Kondolojy, Amanda (April 24, 2015). "Thursday Final Ratings: 'The Big Bang Theory' & 'The Blacklist' Adjusted Up". TV by the Numbers. Retrieved April 24, 2015.
↑ Bibel, Sara (May 1, 2015). "Thursday Final Ratings: 'The Big Bang Theory' & 'Bones' Adjusted Up; 'American Crime' Adjusted Down". TV by the Numbers. Retrieved May 1, 2015.
↑ Kondolojy, Amanda (May 8, 2015). "Thursday Final Ratings: 'The Big Bang Theory' Adjusted Up; 'Grey's Anatomy' Adjusted Down". TV by the Numbers. Retrieved May 8, 2015.
↑ "Monday Final Ratings: 'The Big Bang Theory' Adjusted Up; 'Significant Mother', 'Life in Pieces' & 'Penn & Teller' Adjusted Down - Ratings". TV by the Numbers.
↑ Dixon, Dani (September 29, 2015). "Monday Final Ratings: 'The Big Bang Theory' + 'The Voice' Adjusted Up; 'Castle', 'Life in Pieces' & 'Dancing with the Stars' Adjusted Down". TV by the Numbers. Retrieved September 29, 2015.
↑ Porter, Rick (October 6, 2015). "Monday Final Ratings: 'The Big Bang Theory' and 'The Voice' Adjusted Up; 'Blindspot' and 'Castle' Adjusted Down". TVbytheNumbers. Retrieved October 6, 2015.
↑ Porter, Rick (October 13, 2015). "Monday final ratings: 'The Voice' and 'Big Bang Theory' adjusted up, 'Castle,' 'Life in Pieces' and 'Scorpion' adjusted down". TV by the Numbers. Retrieved October 13, 2015.
↑ Porter, Rick (October 20, 2015). "Monday final ratings: 'Crazy Ex-Girlfriend' and 'Jane the Virgin' adjusted down, 'Big Bang' adjusted up". TV by the Numbers. Retrieved October 20, 2015.
↑ Porter, Rick (November 3, 2015). "Monday final ratings: 'Supergirl' and 'Blindspot' adjust down, 'Big Bang Theory' adjusts up". TV by the Numbers. Retrieved November 4, 2015.
↑ Porter, Rick (November 6, 2015). "Thursday Final Ratings: 'Elementary' and 'Mom' adjust down considerably thanks to NFL". TV by the Numbers. Retrieved November 6, 2015.
↑ Porter, Rick (November 13, 2015). "Thursday final ratings: '2 Broke Girls' and CBS take NFL hit, 'Elementary' below 1.0, 'Blacklist' adjusts up". TV by the Numbers. Retrieved November 13, 2015.
↑ Porter, Rick (November 20, 2015). "Thursday final ratings: 'Mom' and '2 Broke Girls' up even after adjusting down". TV by the Numbers. Retrieved November 20, 2015.
↑ Porter, Rick (December 11, 2015). "Thursday final ratings: '2 Broke Girls' and other CBS shows adjust down with NFL pre-emptions". TV by the Numbers. Retrieved December 11, 2015.
↑ Porter, Rick (December 18, 2015). "Thursday Final Ratings: 'Big Bang Theory' holds, season high for 'Mom' despite adjusting down". TV by the Numbers. Retrieved December 18, 2015.
↑ Porter, Rick (January 8, 2016). "Thursday final ratings: 'Life in Pieces' adjusts down". TV by the Numbers. Retrieved January 8, 2016.
↑ Porter, Rick (January 15, 2016). "Thursday final ratings: 'The Big Bang Theory' and 'The Blacklist' adjust up". TV by the Numbers. Retrieved January 15, 2016.
↑ Porter, Rick (February 5, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Life in Pieces' and 'Mom' adjust down". TV by the Numbers. Retrieved February 5, 2016.
↑ Porter, Rick (February 12, 2016). "Thursday final ratings: 'Mom' adjusts up". TV by the Numbers. Retrieved February 12, 2016.
↑ Porter, Rick (February 19, 2016). "Thursday final ratings: 'Big Bang Theory,' 'Scandal' and 'How to Get Away with Murder' adjust up". TV by the Numbers. Retrieved February 19, 2016.
↑ Porter, Rick (February 26, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Life in Pieces' adjusts down". TV by the Numbers. Retrieved February 26, 2016.
↑ Porter, Rick (March 11, 2016). "Thursday final ratings: 'Scandal' adjusts up, 4 CBS shows adjust down". TV by the Numbers. Retrieved March 11, 2016.
↑ Porter, Rick (April 1, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Scandal,' 'Life in Pieces' and 'The 100' adjust down". TV by the Numbers. Retrieved April 1, 2016.
↑ Porter, Rick (April 8, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Odd Couple' and 'The 100' adjust down". TV by the Numbers. Retrieved April 8, 2016.
↑ Porter, Rick (April 22, 2016). "Thursday final ratings: 'Big Bang Theory' and 'Bones' adjust up, '2 Broke Girls' and 'Legends of Tomorrow' adjust down". TV by the Numbers. Retrieved April 22, 2016.
↑ Porter, Rick (April 29, 2016). "Thursday final ratings: 'Grey's Anatomy' and 'Big Bang Theory' adjust up, 'Odd Couple,' 'Mom' and 'The 100' adjust down". TV by the Numbers. Retrieved April 29, 2016.
↑ Porter, Rick (May 6, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Mom' and 'Rush Hour' adjust down". TV by the Numbers. Retrieved May 6, 2016.
↑ Porter, Rick (May 13, 2016). "Thursday final ratings: 'The Big Bang Theory,' 'The Catch' and 'Legends of Tomorrow' adjust up". TV by the Numbers. Retrieved May 13, 2016.
↑ Porter, Rick (September 20, 2016). "Monday final ratings: 'Big Bang Theory' and 'Gotham' adjust up, 'Kevin' and 'Good Place' hold". TV by the Numbers. Retrieved September 20, 2016.
↑ Porter, Rick (September 27, 2016). "Monday final ratings: 'Big Bang Theory' adjusts up, 'Voice' adjusts down, final debate numbers". TV by the Numbers. Retrieved September 27, 2016.
↑ Porter, Rick (October 4, 2016). "'Conviction,' 'Timeless,' 'Kevin' and 'Scorpion' all adjust down, 'Big Bang' and 'Voice' adjust up: Monday final ratings". TV by the Numbers. Retrieved October 4, 2016.
↑ Porter, Rick (October 11, 2016). "'Timeless,' 'Conviction,' 'DWTS,' 'Lucifer' adjust down, 'Big Bang' adjusts up: Monday final ratings". TV by the Numbers. Retrieved October 11, 2016.
↑ Porter, Rick (October 18, 2016). "'Gotham,' 'The Voice,' 'Big Bang,' 'DWTS' adjust up, 'Conviction' and '2 Broke Girls' adjust down: Monday final ratings". TV by the Numbers. Retrieved October 19, 2016.
↑ Porter, Rick (October 28, 2016). "'The Good Place' and 'Chicago Med' adjust up, 'Pure Genius,' other CBS shows adjust down: Thursday final ratings". TV by the Numbers. Retrieved October 28, 2016.
↑ Porter, Rick (November 4, 2016). "'Big Bang Theory,' 'How to Get Away' adjust up, 'Great Indoors' and NBC adjust down: Thursday final ratings". TV by the Numbers. Retrieved November 4, 2016.
↑ Porter, Rick (November 11, 2016). "'Chicago Med' and NBC adjust down with NFL pre-emptions: Thursday final ratings". TV by the Numbers. Retrieved November 11, 2016.
↑ Welch, Alex (November 18, 2016). "'Grey's Anatomy' adjusts up, 'The Great Indoors' adjusts down: Thursday final ratings". TV by the Numbers. Retrieved November 18, 2016.
↑ Porter, Rick (December 5, 2016). "'Legends of Tomorrow' adjusts up, 'Supernatural,' 'Great Indoors,' 'Baking Show' adjust down: Thursday final ratings". TV by the Numbers. Retrieved December 5, 2016.
↑ "(#T12.15311) "The Birthday Synchronicity"". The Futon Critic. Retrieved December 13, 2016.

General references

"The Big Bang Theory on CBS". TV Guide. Retrieved May 16, 2010.
"Shows A-Z – big bang theory, the on CBS". the Futon Critic. Retrieved May 16, 2010.
"The Big Bang Theory: Episode Guide". MSN TV. Retrieved August 24, 2010.

External links

Official website

The Big Bang Theory

Characters

Episodes

Season 1	"Pilot"

Season 2	"The Terminator Decoupling"

Season 3	"The Jiminy Conjecture"

Season 4	"The Cruciferous Vegetable Amplification" "The Hot Troll Deviation" "The Love Car Displacement" "The Toast Derivation" "The Roommate Transmogrification"

Season 5	"The Skank Reflex Analysis" "The Infestation Hypothesis" "The Wiggly Finger Catalyst" "The Russian Rocket Reaction" "The Rhinitis Revelation" "The Good Guy Fluctuation" "The Isolation Permutation" "The Flaming Spittoon Acquisition" "The Shiny Trinket Maneuver" "The Recombination Hypothesis" "The Beta Test Initiation" "The Werewolf Transformation" "The Hawking Excitation" "The Stag Convergence" "The Countdown Reflection"

Season 6	"The Fish Guts Displacement" "The Santa Simulation" "The Egg Salad Equivalency"

Season 7	"The Hofstadter Insufficiency" "The Convention Conundrum"

Season 8

Season 9

Season 10

Recurring concepts

"Soft Kitty"

Portal
Category
Book

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