The Big Bang Theory/The Thespian Catalyst
From The TV IV
| The Thespian Catalyst | |
| Season 4, Episode 14 | |
| Airdate | February 3, 2011 |
| Production Number | 3X6664 |
| Writer(s) | Bill Prady & Steven Molaro & Maria Ferrari (teleplay) Chuck Lorre & Lee Aronsohn & Jim Reynolds (story) |
| Director(s) | Mark Cendrowski |
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| The Love Car Displacement | The Benefactor Factor |
| The Big Bang Theory — Season Four | |
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The Thespian Catalyst is the fourteenth episode of the fourth season of The Big Bang Theory, and the seventy-seventh episode overall.
Starring: Johnny Galecki (Dr. Leonard Hofstadter), Jim Parsons (Dr. Sheldon Cooper), Kaley Cuoco (Penny), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Dr. Rajesh "Raj" Koothrappali), Mayim Bialik (Amy Farrah Fowler), Melissa Rauch (Bernadette Rostenkowski)
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