The Big Bang Theory/The Zazzy Substitution

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The Zazzy Substitution
Season 4, Episode 3
Airdate October 7, 2010
Production Number 3X6653
Writer(s) Lee Aronsohn
& Steven Molaro
& Maria Ferrari (teleplay)
Chuck Lorre
& Bill Prady
& Jim Reynolds (story)
Director(s) Mark Cendrowski
← 4x02
The Cruciferous Vegetable Amplification
4x04 →
The Hot Troll Deviation
The Big Bang TheorySeason Four
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The Zazzy Substitution is the third episode of the fourth season of The Big Bang Theory, and the sixty-sixth 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)

Special Guest Star: Laurie Metcalf (Mary)

Guest Starring: Mayim Bialik (Amy)


Plot Overview


Arc Advancement





The Show

Behind the Scenes

Memorable Moments