Leonard returns from his North Sea expedition to find that his relationship with Penny involves more beta-testing than he’s ever done in a lab. Howard’s attachment issues with the women in his life in particular and Raj’s social breakthrough with women in general provide more laughs. Bernadette and Amy stand staunchly by the men in their life, even when they’re sitting in marathon role-playing games. Sheldon sees his mom in a totally different way, parties with James Earl Jones, establishes a (sort of) bond with his idol Professor Proton and makes a scientific breakthrough that breaks down before you can say Science Friday.
While Leonard is away, Sheldon and Penny bond, but it's Sheldon's feelings that are crushed when… |
Howard's relationship with his mother causes an unusual threat to his masculinity. Meanwhile,… |
When the entire gang competes in a cutthroat scavenger hunt designed by Raj that tests their… |
After Amy ruins one of Sheldon's favorite movies – Raiders of the Lost Ark – he gets defensive,… |
Sheldon must decide how much "Amy time" is too much after she takes a job at his university, and… |
Sheldon's latest scientific breakthrough makes him feel like a fraud – and threatens to haunt him… |
Sheldon feels slighted when Professor Proton seeks advice from Leonard instead of him, and he seeks… |
Leonard tries to keep Sheldon from overreacting when a past mistake comes to light, but Sheldon… |
An upset Sheldon protests when the entire gang drags him to Mrs. Wolowitz's house for Thanksgiving.… |
Sheldon faces a crisis after Leonard disproves his accidental scientific discovery. Meanwhile, Raj… |
While Sheldon is in Texas, the rest of the gang realize how much he has changed their lives as they… |
As Leonard tries to help Penny with a disappointment, Penny asks him a bold question about their… |
Sheldon must learn how to relax when he is forced to take a vacation; Leonard tries to support… |
Unable to get Comic-Con tickets, Sheldon tries to hold his own convention and ends up spending a… |
On Valentine's Day, Sheldon and Amy go on a trip to wine country with Howard and Bernadette; Penny… |
When Leonard buys a dining room table, Sheldon re-evaluates the changes in his life; Bernadette is… |
Bernadette tries to negotiate peace between Sheldon and Wolowitz; Penny receives an embarrassing… |
Sheldon is faced with a new reality when he visits his mom in Houston after a trip to NASA; a… |
Raj struggles with guilt when he dates two women at once; Penny has a chance to play a part in a… |
Sheldon has a personal crisis when he decides string theory is a waste of his time; a double date… |
Sheldon gives spontaneity a try, which causes unexpected friction for Penny, Bernadette and Amy;… |
Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny;… |
A bad day compels Penny to re-evaluate her choices -- including Leonard; Bernadette and Howard must… |
Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take… |