Sep. 24, 2007
30 min.
CBS TV Network

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The Big Bang Theory tv show photo

The Big Bang Theory

Leonard and Sheldon are brilliant physicists, the kind of "beautiful minds" that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door.

The Big Bang Theory Season 4 (2010-2011)

4x01 4 4x01 The Robotic Manipulation
Sheldon has been communicating with Amy Farrah Fowler for the past few months via text messages. Penny convinces Sheldon he should go on a date with her after he informs the group that ...
Sep. 23, 2010
4x02 4 4x02 The Cruciferous Vegetable Amplification
Determined to live long enough for the moment when man and machine become one, Sheldon decides he must cease all physical contact with the outside world. Using a computer screen and ...
Sep. 30, 2010
4x03 4 4x03 The Zazzy Substitution
After having a major disagreement about whose work is more important, Sheldon and Amy Farrah Fowler decide to end their relationship. As a means of coping, Sheldon begins to acquire ...
Oct. 07, 2010
4x04 4 4x04 The Hot Troll Deviation
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
Oct. 14, 2010
4x05 4 4x05 The Desperation Emanation
Leonard is depressed to realize all the other guys have girlfriends, while he doesn't. Amy wants to introduce Sheldon to her mother.
Oct. 21, 2010
4x06 4 4x06 The Irish Pub Formulation
A visit from Raj's sister coincides with Leonard becoming secretive.
Oct. 28, 2010
4x07 4 4x07 The Apology Insufficiency
The rest of the gang is interviewed by the FBI for Wolowitz's security clearance.
Nov. 04, 2010
4x08 4 4x08 The 21-second Excitation
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy (Mayim Bialik) to her first slumber party.
Nov. 11, 2010
4x09 4 4x09 The Boyfriend Complexity
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope. Source: CBS
Nov. 18, 2010
4x10 4 4x10 The Alien Parasite Hypothesis
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
Dec. 09, 2010
4x11 4 4x11 The Justice League Recombination
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
Dec. 16, 2010
4x12 4 4x12 The Bus Pants Utilization
Leonard's idea for a smartphone app derails his friendship with Sheldon.
Jan. 06, 2011
4x13 4 4x13 The Love Car Displacement
Bernadette encounters her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.
Jan. 20, 2011
4x14 4 4x14 The Thespian Catalyst
Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
Feb. 03, 2011
4x15 4 4x15 The Benefactor Factor
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
Feb. 10, 2011
4x16 4 4x16 The Cohabitation Formulation
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
Feb. 17, 2011
4x17 4 4x17 The Toast Derivation
Sheldon struggles to cope when he realizes it's actually Leonard who is the center of their social group.
Feb. 24, 2011
4x18 4 4x18 The Prestidigitation Approximation
Priya disapproves of Leonard continuing to be friends with Penny, so he has to choose between Priya and Penny. Sheldon is baffled by Wolowitz's magic trick.
Mar. 10, 2011
4x19 4 4x19 The Zarnecki Incursion
When Sheldon has his online gaming account hacked and his character stolen from, the guys team up in order to discover out who did it.
Mar. 31, 2011
4x20 4 4x20 The Herb Garden Germination
Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
Apr. 07, 2011
4x21 4 4x21 The Agreement Dissection
The girls take Sheldon dancing while Priya, as a experienced lawyer, tries to break apart 'the roommate agreement'.
Apr. 28, 2011
4x22 4 4x22 The Wildebeest Implementation
Raj tries to cure himself from his 'social anxiety disorder' that appears when he is talking to women. Penny will use Bernadette to spy on Leonard and his new girlfriend Priya.
May. 05, 2011
4x23 4 4x23 The Engagement Reaction
Bernadette and Mrs. Wolowitz have a “get-to-know-ya” lunch at a deli. Howard hopes that once his mom sees how wonderful Bernadette is, she’ll welcome her into the family like ...
May. 12, 2011
4x24 4 4x24 The Roommate Transmogrification
When Bernadette receives her PhD, the guys take joy in reminding an emasculated Wolowitz that he is the only one in their group who isn't a doctor; Raj becomes Sheldon's new roommate ...
May. 19, 2011
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