The Big Bang Theory/The 21-Second Excitation

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The 21-Second Excitation
Season 4, Episode 8
Airdate November 11, 2010
Production Number 3X6658
Teleplay by Lee Aronsohn &
Steven Molaro &
Steve Holland
Story by Chuck Lorre &
Bill Prady &
Jim Reynolds
Directed by Mark Cendrowski
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The 21-Second Excitation is the eighth episode of the fourth season of The Big Bang Theory, and the seventy-first 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)

Special Appearance by: Wil Wheaton (Evil Wil Wheaton)

Guest Starring: Eric Andre (Joey)


Plot Overview


Arc Advancement





The Show

Behind the Scenes

Memorable Moments