| The Big Bang Theory - S04E17 - The Toast Derivation.avi|
Plot Summary: Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
Release Date: 2011-02-24
Directors: Chuck Lorre,Bill Prady
Writers: Chuck Lorre,Bill Prady
Starcast: Johnny Galecki,Jim Parsons,Kaley Cuoco