The Big Bang Theory (2007– )
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The Peanut Reaction 

When Penny learns that Leonard has never had a birthday party, she and the rest of the guys plan a surprise party for him.

Director:

Mark Cendrowski

Writers:

Chuck Lorre (created by), Bill Prady (created by) | 4 more credits »
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Cast

Episode complete credited cast:
Johnny Galecki ... Leonard Hofstadter
Jim Parsons ... Sheldon Cooper
Kaley Cuoco ... Penny
Simon Helberg ... Howard Wolowitz
Kunal Nayyar ... Raj Koothrappali
Vernee Watson ... Althea (as Vernée Watson)
Judith Moreland ... Jan
Ronald Hunter ... Dan
Chuck Carter Chuck Carter ... Stan
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Storyline

Penny wishes Leonard a happy birthday which she knows is this upcoming Saturday, when she expects him to at least come in for his free piece of birthday cake at the restaurant. She is shocked to learn that Leonard not only does not celebrate his birthday, but that he's never had a birthday party. Regardless of Leonard's wants, Penny decides to throw him a surprise party. Although she gets help from Sheldon, Howard and Raj, the preparation for the party does not go to her plans, including needing to help Sheldon buy a gift, Howard not being able to get Leonard out of the apartment, and Raj not being able to decorate the apartment since Leonard's there. Will Leonard enjoy his first birthday party after all this difficult effort? Written by Huggo

Plot Summary | Add Synopsis

Genres:

Comedy | Romance

Certificate:

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Details

Country:

USA

Language:

English

Release Date:

12 May 2008 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs

Runtime:

Sound Mix:

Stereo

Color:

Color

Aspect Ratio:

16:9
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Did You Know?

Trivia

According to Penny (Kaley Cuoco), Sheldon (Jim Parsons) is a Taurus. See more »

Goofs

The heroes play the Talisman board game, but they have too many character cards on a board (eight, including two toads, while there are only three players). See more »

Quotes

Leonard: I don't celebrate my birthday
Penny: Shut up. Yeah, you do.
Leonard: It's no big deal. It's the way I was raised. My parents focused on celebrating achievements and being expelled from a birth canal was not considered one of them.
Penny: That's so silly.
Sheldon: It's actually based on very sound theories. His mother published a paper on it.
Penny: Well, what was it called? "l Hate My Son and That's Why He Can't Have Cake"?
Sheldon: It was obviously effective. Leonard grew up to be an experimental physicist. Perhaps if she'd also denied him ...
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Crazy Credits

In the opening scroll of the time line when it gets to 91,000 there is a mistake the dates read 93,000BC 92,000BC 91,0009C 90,000BC for some reason 91,000 is a 9c not a BC. See more »

Connections

References Halo: Combat Evolved (2001) See more »

Soundtracks

History of Everything (Instrumental version)
(uncredited)
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Instrumental version of series theme song played over the closing credits]
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