Watch free series The Big Bang Theory season 9 episode 17 S9E17 - The Celebration Experimentation 2016 with English subtitles
The gang convince Sheldon to celebrate his birthday and throw him a party.
Country : USA
Director : Mark Cendrowski
IMDB rating : 7.5
Released : 25 Feb 2016
Stars : Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
Writer : Chuck Lorre (created by), Bill Prady (created by), Steven Molaro (teleplay), Steve Holland (teleplay), Tara Hernandez (teleplay), Chuck Lorre (story), Eric Kaplan (story), Jeremy Howe (story)