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The Celebration Experimentation

This episode is locked. New translations may be added.

After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.

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  • Originally Aired February 25, 2016
  • Runtime 25 minutes
  • Content Rating United States of America TV-14
  • Production Code 4X7217
  • Network CBS
  • On Other Sites IMDB
  • Created October 17, 2019 by
    Administrator admin
  • Modified October 17, 2019 by
    Administrator admin
Name Type Role
Steven Molaro Writer
Tara Hernandez Writer
Steve Holland Writer
Steven Molaro Showrunner
Stephen Hawking Guest Star
John Ross Bowie Guest Star
Sara Gilbert Guest Star
Wil Wheaton Guest Star
Adam West Guest Star
Christine Baranski Guest Star
Mark Cendrowski Director
Bill Prady Creator
Chuck Lorre Creator