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The Big Bang Theory S4E18 poster

Watch The Big Bang Theory – Season 4 Episode 18: The Prestidigitation Approximation

The Big Bang Theory • Season 4, Episode 18 • 21 min • 2007 • ⭐ 7.9/10 • Comedy

Cast: Jim Parsons , Kaley Cuoco , Johnny Galecki , Simon Helberg , Kunal Nayyar , Melissa Rauch , Mayim Bialik

Directors: Chuck Lorre , Bill Prady

Watch The Big Bang Theory – S4E18

Episode Overview

Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.

Episode Navigation

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