The Big Bang Theory | The Celebration Experimentation
Genre: Comedy
Director: Bill Prady, Chuck Lorre
Cast: Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Simon Helberg
Description: : After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.