September 23, 2010 • 21m
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
September 30, 2010 • 21m
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
October 7, 2010 • 21m
The guys are concerned as Sheldon searches for an alternative to human companionship.
October 14, 2010 • 20m
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
October 21, 2010 • 21m
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
October 28, 2010 • 22m
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
November 4, 2010 • 21m
Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
November 11, 2010 • 19m
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
November 18, 2010 • 21m
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
December 9, 2010 • 20m
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
December 16, 2010 • 20m
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
January 6, 2011 • 21m
Leonard's idea for a smartphone app derails his friendship with Sheldon.
January 20, 2011 • 21m
Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
February 3, 2011 • 21m
Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
February 10, 2011 • 20m
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
February 17, 2011 • 20m
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
February 24, 2011 • 21m
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
March 10, 2011 • 21m
Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
March 31, 2011 • 21m
Sheldon's online-game account is hacked by Todd Zarnecki, who then proceeds to steal all his items prompting the guys to go on a q...Read more
April 7, 2011 • 21m
Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadett...Read more
April 28, 2011 • 21m
When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement....Read more
May 5, 2011 • 21m
Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
May 12, 2011 • 20m
When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
May 19, 2011 • 21m
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.