The Big Bang Theory · SEASON 9

The Celebration Experimentation

Episode 17 · 2016-02-25

★ 7.1
The Big Bang Theory poster
Season 9Episode 17★ 7.1/10
  • Comedy

Episode overview

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

19 minutes

Season 9 episodes