"The Jiminy Conjecture"

Leonard and Penny try and make things not awkward after their hookup; Sheldon and Wolowitz bet their best comic books on a bet to determine the species of a cricket

"The Electric Can Opener Fluctuation"

Sheldon runs to his mother when he learns the gang messed with her arctice expedition's data; the guys go chasing after him with Leonard sacrificing his chance with Penny.

"The Monopolar Expedition"

When Sheldon gets news he's going to the North Pole on a NSF expedition, he invites the guys as his group.

"The Classified Materials Turbulence"

Howard enlists the help of the boys in order to fix his space toilet. Stuart and Penny go on their second date.

"The Vegas Renormalization"

When Wolowitz gets dumped by Leslie, Raj and Leonard take him to Las Vegas to get over his breakup. Meanwhile, Sheldon gets locked out of the apartment and has to crash at Penny's.

"The Hofstadter Isotope"

A friend of the guys who works at the comic book store, Stuart (Kevin Sussman) hits it off with Penny, prompting Leonard and Wolowitz to head out to ladies' night at a local bar.

"The Dead Hooker Juxtaposition"

Penny gets jealous of the guys' new sexy female neighbor (Valerie Azlynn)

"The Work Song Nanocluster"

The boys help Penny with her new business selling Penny Blossoms.

"The Terminator Decoupling"

On a train ride to San Francisco, Leonard, Sheldon, Wolowitz, and Raj discover that Summer Glau is on their train ride.

"The Cushion Saturation"

A paintball game leads to a fight between Penny and Sheldon, but also for a romance between Wolowitz and Leslie!

TBBT Quotes

Amy, I excel at many things, but getting over you wasn't one of them.


(Singing) Thor and Dr Jones, Thor and Dr. Jones. One plays with lightening, the other plays with bones.

Howard and Raj