The Big Bang Theory - Season 4
Description: This season the Big Bang gang’s romantic universe expands. On the rebound from Penny, Leonard falls into the arms of Raj’s sister Priya. Sheldon gets a girlfriend, or rather a friend who is a girl: Amy, a dour neurobiologist who declares herself besties with Penny. Howard and Bernadette heat up. And so do Raj and Bernadette (at least in Raj’s Bollywood daydream).
Episodes
The Robotic Manipulation
Aired: Sep 23, 2010
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a ro...
The Cruciferous Vegetable Amplification
Aired: Sep 30, 2010
Realizing he will not live long enough to download his consciousness into a robo...
The Zazzy Substitution
Aired: Oct 7, 2010
The guys are concerned as Sheldon searches for an alternative to human companion...
The Hot Troll Deviation
Aired: Oct 14, 2010
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have ...
The Desperation Emanation
Aired: Oct 21, 2010
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants t...
The Irish Pub Formulation
Aired: Oct 28, 2010
Leonard keeps an affair a secret from Sheldon, Howard and Raj....
The Apology Insufficiency
Aired: Nov 4, 2010
Sheldon's answers during an FBI interview put Wolowitz's security clearance in j...
The 21-Second Excitation
Aired: Nov 11, 2010
While the guys camp in line for a long-awaited movie screening, Penny and Bernad...
The Boyfriend Complexity
Aired: Nov 18, 2010
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull a...
The Alien Parasite Hypothesis
Aired: Dec 9, 2010
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowit...
The Justice League Recombination
Aired: Dec 16, 2010
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a c...
The Bus Pants Utilization
Aired: Jan 6, 2011
Leonard's idea for a smartphone app derails his friendship with Sheldon....
The Love Car Displacement
Aired: Jan 20, 2011
Bernadette runs into her ex-boyfriend while attending a science event with Wolow...
The Thespian Catalyst
Aired: Feb 3, 2011
Hoping it will make him a better teacher, Sheldon has Penny give him acting less...
The Benefactor Factor
Aired: Feb 10, 2011
A wealthy donor to the university makes Leonard consider how far he's willing to...
The Cohabitation Formulation
Aired: Feb 17, 2011
As Wolowitz contemplates taking things with Bernadette to the next level, Leonar...
The Toast Derivation
Aired: Feb 24, 2011
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment a...
The Prestidigitation Approximation
Aired: Mar 10, 2011
Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating...
The Zarnecki Incursion
Aired: Mar 31, 2011
Sheldon's online-game account is hacked by Todd Zarnecki, who then proceeds to s...
The Herb Garden Germination
Aired: Apr 7, 2011
Sheldon and Amy decide to start several rumors about the others as a test. Meanw...
The Agreement Dissection
Aired: Apr 28, 2011
When Leonard spends too much time in the shower with Priya, Sheldon charges Leon...
The Wildebeest Implementation
Aired: May 5, 2011
Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to ...
The Engagement Reaction
Aired: May 12, 2011
When Howard finally breaks the news to his mom that he's engaged to Bernadette, ...
The Roommate Transmogrification
Aired: May 19, 2011
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard sw...