The Toast Derivation

Sheldon seeks to form a new group of friends of which he can be the center when he's told that Leonard is the center of the gang.

Season 4 | Episode 17


Jim Parsons

as Sheldon Cooper

Johnny Galecki

as Leonard Hofstadter

Kaley Cuoco

as Penny

Simon Helberg

as Howard Wolowitz

Kunal Nayyar

as Raj Koothrappali