12 Season
279 Episode
The Big Bang Theory - Season 4 Episode 17 The Toast Derivation (2019)
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
- Country : United States of America
- Genre : Comedy
- Studio : CBS
- Director : Chuck Lorre, Bill Prady
- Cast : Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch