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The Big Bang Theory S3E20 poster

Watch The Big Bang Theory – Season 3 Episode 20: The Spaghetti Catalyst

The Big Bang Theory • Season 3, Episode 20 • 20 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 – S3E20

Episode Overview

When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.

Episode Navigation

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