The Big Bang Theory

Season 4 Episode 17: The Toast Derivation

Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.

Genre:

Comedy

Seasons:

12

Episodes:

279

Cast:

Johnny Galecki, Jim Parsons, Kaley Cuoco

Quality:

HD

Duration:

21 min

First Air:

2007

Rating:

7.9