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The Big Bang Theory S3E20 — The Spaghetti Catalyst
8.1
The Big Bang Theory•Season 3•Episode 20

The Spaghetti Catalyst

8.1/10 · 4,606 votesMay 3, 201020 min

Ranked #15 of 23 in Season 3•−0.1 vs season avg

Discussion

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

Directed byAnthony Rich
Written byLee Aronsohn, Chuck Lorre, Bill Prady, Steven Molaro
Previous episodeE19 · The Wheaton RecurrenceNext episodeE21 · The Plimpton Stimulation
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Cast5

Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Kaley Cuoco

Penny

Simon Helberg

Simon Helberg

Howard Wolowitz

Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Crew6

Lee Aronsohn

Lee Aronsohn

Writer

Anthony Rich

Anthony Rich

Director

Chuck Lorre

Chuck Lorre

Writer

Bill Prady

Bill Prady

Writer

N

Nikki Lorre

Second Assistant Director

Steven Molaro

Steven Molaro

Writer

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Episode Summary

"The Spaghetti Catalyst" is episode 20 of The Big Bang Theory season 3. It scored 8.1/10 from 4,606 votes, ranking #15 of 23 episodes this season (season average 8.2). Directed by Anthony Rich and written by Lee Aronsohn, Chuck Lorre, Bill Prady, Steven Molaro, it aired on May 3, 2010.

Next: E21 · The Plimpton StimulationBest of Season 3