The Big Bang Theory
Season 4

s04e01 / The Robotic Manipulation

24th Sep '10 - 12:00am
The Robotic Manipulation

Howard uses a robotic arm for his own pleasure. Penny assists Sheldon with his first date.

35128 have watched this episode

s04e02 / The Cruciferous Vegetable Amplification

1st Oct '10 - 12:00am
The Cruciferous Vegetable Amplification

Sheldon realizes that by the time he downloads his consciousness into a robot body, he'll be dead, so he tries to make himself live longer.

35139 have watched this episode

s04e03 / The Zazzy Substitution

8th Oct '10 - 12:00am
The Zazzy Substitution

When Sheldon "breaks up" with Amy, the guys worry as he tries to find a companion to replace her.

35134 have watched this episode

s04e04 / The Hot Troll Deviation

15th Oct '10 - 12:00am
The Hot Troll Deviation

An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.

35134 have watched this episode

s04e05 / The Desperation Emanation

22nd Oct '10 - 12:00am
The Desperation Emanation

Leonard realizes he's the only one without a girlfriend, while Sheldon wants to get rid of his.

35127 have watched this episode

s04e06 / The Irish Pub Formulation

29th Oct '10 - 12:00am
The Irish Pub Formulation

A visit from Raj's sister coincides with Leonard becoming secretive.

35146 have watched this episode

s04e07 / The Apology Insufficiency

5th Nov '10 - 12:00am
The Apology Insufficiency

Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.

35296 have watched this episode

s04e08 / The 21-second Excitation

12th Nov '10 - 1:00am
The 21-second Excitation

The guys camp out in line to see a movie, but have their plans jeopardized by Wil Wheaton. Penny and Bernadette invite Amy over for a slumber party.

35899 have watched this episode

s04e09 / The Boyfriend Complexity

19th Nov '10 - 1:00am
The Boyfriend Complexity

Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.

35880 have watched this episode

s04e10 / The Alien Parasite Hypothesis

10th Dec '10 - 1:00am
The Alien Parasite Hypothesis

Amy crushes on one of Penny's dim ex-boyfriends. Raj and Wolowitz argue over who'd be the better superhero.

35883 have watched this episode

s04e11 / The Justice League Recombination

17th Dec '10 - 1:00am
The Justice League Recombination

The guys rope Zack into their costume contest entry as the Justice League.

35847 have watched this episode

s04e12 / The Bus Pants Utilization

7th Jan '11 - 1:00am
The Bus Pants Utilization

Leonard's friendship with Sheldon becomes strained when they both fight over an idea for a smartphone application.

35961 have watched this episode

s04e13 / The Love Car Displacement

21st Jan '11 - 1:00am
The Love Car Displacement

A science convention at a hotel leads to Bernadette running into an ex-boyfriend and Wolowitz worrying he can't quite compare.

35907 have watched this episode

s04e14 / The Thespian Catalyst

4th Feb '11 - 1:00am
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.

35973 have watched this episode

s04e15 / The Benefactor Factor

11th Feb '11 - 1:00am
The Benefactor Factor

An aged, but wealthy, Caltech donor wants sex from Leonard in exchange for another large donation.

35938 have watched this episode

s04e16 / The Cohabitation Formulation

18th Feb '11 - 1:00am
The Cohabitation Formulation

Wolowitz finds himself having to choose between Bernadette and his mother. Leonard has another rendezvous with Raj's sister Priya.

35915 have watched this episode

s04e17 / The Toast Derivation

25th Feb '11 - 1:00am
The Toast Derivation

Realizing Leonard is the center of the gang, Sheldon seeks to form a new group of friends of which he can be the center.

35876 have watched this episode

s04e18 / The Prestidigitation Approximation

11th Mar '11 - 1:00am
The Prestidigitation Approximation

Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.

35928 have watched this episode

s04e19 / The Zarnecki Incursion

1st Apr '11 - 12:00am
The Zarnecki Incursion

When Sheldon has his online gaming account hacked and his character stolen from, the guys team up to discover out who did it.

35927 have watched this episode

s04e20 / The Herb Garden Germination

8th Apr '11 - 12:00am
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.

35942 have watched this episode

s04e21 / The Agreement Dissection

29th Apr '11 - 12:00am
The Agreement Dissection

Sheldon goes dancing with the girls while Priya tries to break down the roommate agreement using legal theory.

35858 have watched this episode

s04e22 / The Wildebeest Implementation

6th May '11 - 12:00am
The Wildebeest Implementation

Raj hopes to cure himself of his inability to talk to women. Meanwhile, Penny recruits Bernadette to spy on Leonard and Priya.

35947 have watched this episode

s04e23 / The Engagement Reaction

13th May '11 - 12:00am
The Engagement Reaction

Howard musters up the courage to tell his mother that he is going to marry Bernadette. The news doesn\'t sit well and she ends up in the hospital.

35926 have watched this episode

s04e24 / The Roomate Transmogrfication

20th May '11 - 12:00am
The Roomate Transmogrfication

When Bernadette receives her Ph.D., the guys take joy in reminding an emasculated Wolowitz that he is the only one in their group who isn't a doctor. Meanwhile, Koothrappali becomes Sheldon's new roommate after hearing Leonard and Priya engaging in a "Star Trek" bedroom fantasy.

35893 have watched this episode
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