The Big Bang Theory (2007–2019)
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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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Did You Know?

Trivia

Howard (Simon Helberg)'s physical changes brought on by his peanut allergy was created with prosthetics applied to the actor. They did not actually poison the actor for a cheap laugh. 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

Penny: Okay, here's the deal: you either you help me throw Leonard a birthday party, or so help me, God, I will go into your bedroom, and unbag all of your most valuable, mint-condition comic books and, on one of them, you won't know which, I'll draw a tiny little happy face in ink.
Sheldon Cooper: You can't do that! If you make a mark in a mint comic book, it's no longer mint.
Penny: Sheldon, do you understand the concept of blackmail?
Sheldon Cooper: Well, of course I... Oh... Hey, I have an idea: let's throw Leonard a kick-ass birthday ...
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #210 I believe that in order to walk through grief, fear, loneliness, despair, confusion and anger without recourse to drugs, alcohol, over-eating, over-sexing, or the endless mind-numbing distractions provided by Western culture, one must become a spiritual warrior. I further believe that the pay-off for enduring suffering, for soberly embracing the inevitable bouts of emotional pain that life brings, is wisdom and serenity in the face of calamity. But make no mistake here, the path of the warrior is treacherous and cannot be walked alone. To survive, he must have brothers and sisters-in-arms to carry him when he buckles. When we lived and died in small tribes, this principle of mutually supporting one another through the trials of life was deeply woven into the fabric of the group mind. With the advent of towns and cities we were forced to live with the daily dilemma of being desperately alone and yet desperately needing one another. Which is why we are, by design, always seeking new tribes. With that in mind, I humbly offer a simple guideline to evaluate the efficacy of any tribe you might encounter on your path to becoming a spiritual warrior: if they ask for your money or access to your crotch, run away. If they ask for your money, smile unceasingly, never blink, and guarantee to make you a demi-god, running away will not suffice. Change your mailing address and briefly reconsider drugs, alcohol, food, sex and TV. See more »

Connections

References Blade Runner (1982) See more »

Soundtracks

History of Everything
(uncredited)
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Series theme song played during the opening titles]
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Details

Country:

USA

Language:

English

Release Date:

12 May 2008 (USA) See more »

Company Credits

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Technical Specs

Runtime:

Sound Mix:

Stereo

Color:

Color

Aspect Ratio:

16:9
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