Season 5 Episode 15 episode 15

The Big Bang Theory Season 5 Episode 15 "The Friendship Contraction" Promo

The Big Bang Theory Season 5 Episode 15 "The Friendship Contraction" Promo

On episode 15 "The Friendship Contraction", Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname, on The Big Bang Theory, Thursday, Feb. 2 on the CBS