The Big Bang Theory

== Series Overview ==
Season	Season	Episodes	Originally aired (U.S. dates)	Originally aired (U.S. dates)
Season	Season	Episodes	Season premiere 	Season finale
 	1 	12 	September 24, 2007 	April 14, 2008
 	2 	24 	September 22, 2008 	May 11, 2009
 	3 	24 	September 21, 2009 	
 	4 	24 	 	
 	5 	24 	 	
 	6 	24 	 	
 	7 	24 	 	
 	8 	24 	 	
 	9 	24 	 	
 	10 	24 	 	
==Season 1: (2007/2008)==
No. in
series	No. in
season	Title 	Directed by 	Written by 	Original air date
1 	1 	"Episode 1.01"	Mark Cendrowski	Chuck Lorre	September 24, 2007
2 	2 	"Episode 1.02"	Mark Cendrowski	Chuck Lorre	October 1, 2007
3 	3 	"Episode 1.03"	Mark Cendrowski	Chuck Lorre	October 8, 2007
4 	4 	"Episode 1.04"	Mark Cendrowski	Chuck Lorre	October 15, 2007
5 	5 	"Episode 1.05"	Mark Cendrowski	Chuck Lorre	October 22, 2007
6 	6 	"Episode 1.06"	Mark Cendrowski	Chuck Lorre	October 29, 2007
7 	7 	"Episode 1.07"	Mark Cendrowski	Chuck Lorre	November 5, 2007
8 	8 	"Episode 1.08"	Mark Cendrowski	Chuck Lorre	November 12, 2007
9 	9 	"Episode 1.09"	Mark Cendrowski	Chuck Lorre	March 17, 2008
10	10	"Episode 1.10"	Mark Cendrowski	Chuck Lorre	March 24, 2008
11	11	"Episode 1.11"	Mark Cendrowski	Chuck Lorre	March 31, 2008
12	12	"Episode 1.12"	Mark Cendrowski	Chuck Lorre	April 14, 2008
== Season 2: (2008/2009) ==
No. in
series	No. in
season	Title 	Directed by 	Written by 	Original air date
13	1 	"Episode 2.01"	Mark Cendrowski	Chuck Lorre	September 22, 2008
14	2 	"Episode 2.02"	Mark Cendrowski	Chuck Lorre	September 29, 2008
15	3 	"Episode 2.03"	Mark Cendrowski	Chuck Lorre	October 6, 2008
16	4 	"Episode 2.04"	Mark Cendrowski	Chuck Lorre	October 13, 2008
17	5 	"Episode 2.05"	Mark Cendrowski	Chuck Lorre	October 20, 2008
18	6 	"Episode 2.06"	Mark Cendrowski	Chuck Lorre	November 3, 2008
19	7 	"Episode 2.07"	Mark Cendrowski	Chuck Lorre	November 10, 2008
20	8 	"Episode 2.08"	Mark Cendrowski	Chuck Lorre	November 17, 2008
21	9 	"Episode 2.09"	Mark Cendrowski	Chuck Lorre	November 24, 2008
22	10	"Episode 2.10"	Mark Cendrowski	Chuck Lorre	December 8, 2008
23	11	"Episode 2.11"	Mark Cendrowski	Chuck Lorre	December 15, 2008
24	12	"Episode 2.12"	Mark Cendrowski	Chuck Lorre	January 12, 2009
25	13	"Episode 2.13"	Mark Cendrowski	Chuck Lorre	January 19, 2009
26	14	"Episode 2.14"	Mark Cendrowski	Chuck Lorre	February 2, 2009
27	15	"Episode 2.15"	Mark Cendrowski	Chuck Lorre	February 9, 2009
28	16	"Episode 2.16"	Mark Cendrowski	Chuck Lorre	March 2, 2009
29	17	"Episode 2.17"	Mark Cendrowski	Chuck Lorre	March 9, 2009
30	18	"Episode 2.18"	Mark Cendrowski	Chuck Lorre	March 16, 2009
31	19	"Episode 2.19"	Mark Cendrowski	Chuck Lorre	March 30, 2009
32	20	"Episode 2.20"	Mark Cendrowski	Chuck Lorre	April 13, 2009
33	21	"Episode 2.21"	Mark Cendrowski	Chuck Lorre	April 27, 2009
34	22	"Episode 2.22"	Mark Cendrowski	Chuck Lorre	May 4, 2009
35	23	"Episode 2.23"	Mark Cendrowski	Chuck Lorre	May 11, 2009
36	24	"Episode 2.24"	Mark Cendrowski	Chuck Lorre	May 11, 2009
== Season 3: (2009/2010) ==
No. in
series	No. in
season	Title 	Directed by 	Written by 	Original air date
37	1	"Episode 3.01"	Mark Cendrowski	Chuck Lorre	September 21, 2009
38	2	"Episode 3.02"	Mark Cendrowski	Chuck Lorre	September 28, 2009
39	3	"Episode 3.03"	Mark Cendrowski	Chuck Lorre	October 5, 2009
40	4	"Episode 3.04"	Mark Cendrowski	Chuck Lorre	October 12, 2009
41	5	"Episode 3.05"	Mark Cendrowski	Chuck Lorre	October 19, 2009