The Big Bang Theory

Sheldon and Penny bond in Leonard's absence (S7 Ep1)

Leonard returns early from his expedition to surprise Penny, but upsets Sheldon (S7 Ep2)

Raj organises a scavenger hunt to test his friends' knowledge and common sense (S7 Ep3)

Amy ruins one of Sheldon's favourite films by pointing out a flaw in the storyline (S7 Ep4)

Amy is asked to work on a project that is taking place at Sheldon's university (S7 Ep5)

Sheldon is mortified when he stumbles upon an important breakthrough by accident (S7 Ep6)

Sheldon feels left out when Professor Proton asks Leonard to read his latest paper (S7 Ep7)

Sheldon over-reacts when Leonard admits that he failed to return a rented DVD (S7 Ep8)

Howard takes the gang to his mother's house for Thanksgiving (S7 Ep9)

Sheldon feels guilty about the fuss over his accidental scientific discovery (S7 Ep10)

While Sheldon's away, the gang imagine life if they'd never met him (S7 Ep11)

Leonard tries to comfort Penny when her big break hits the cutting room floor (S7 Ep12)

Penny and Sheldon spend time together when they're both off work (S7 Ep13)

Sheldon decides to hold his own comic book convention (S7 Ep14)

Amy convinces Sheldon to join her for a romantic train trip to Napa Valley (S7 Ep15)

Sheldon objects strongly to Leonard's purchase of a new dining table (S7 Ep16)

Howard invites Sheldon to fly to Houston on a visit to NASA (S7 Ep17)

Sheldon is forced to confront a new reality when he visits his mother in Houston (S7 Ep18)

Penny debates whether to accept a role in a terrible horror film (S7 Ep19)

Sheldon starts to wonder whether he's wasting his time with String Theory (S7 Ep20)

Penny and Leonard try to distract Sheldon from his career problems (S7 Ep21)

Sheldon is grief-stricken when his idol Professor Proton passes away (S7 Ep22)

A horrible day at work prompts Penny to evaluate her life choices (S7 Ep23)

With multiple changes affecting his life, Sheldon faces an uncertain future (S7 Ep24)