The Big Bang Theory

The Peanut Reaction

Season 1, Ep 16, Aired 5/12/08
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  • Episode Description
  • Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.

  • Cast & Crew
  • Jim Parsons

    Sheldon Cooper

  • Johnny Galecki

    Leonard Hofstadter

  • Kaley Cuoco


  • Kunal Nayyar

    Rajesh Koothrappali

  • Simon Helberg

    Howard Wolowitz

  • Fan Reviews (13)
  • True Colors

    By AriSky, Sep 23, 2013

  • Best episode this season.

    By Kadodian, Apr 20, 2012

  • 116

    By Canogaparkcindy, Nov 07, 2010

  • Penny attempts to throw a suprise party for Leonard.

    By thefanof, May 13, 2008

  • Nerds. ♥

    By Sarah_LOST, Jul 27, 2010

  • Trivia & Quotes
  • Quotes (11)

    • Sheldon: What twelve-year-old boy wants a motorized dirt bike?

    • Sheldon: By the way, a six-year-old can hack your computer system. Penny: (pushing him) Keep walking. Sheldon: 1234 is not a secure password!

    • Sheldon: (to an electronics customer) What computer do you have? And please don't say 'a white one.'

    • (Howard feigns an allergic reaction to peanuts) Howard: We have to go to the hospital! Leonard: Now? Howard: No, we'll wait until my tongue swells up to the size of a BRISKET!

    • Penny: (on Leonard's parents not considering his birthday as an "achievement" to be celebrated) That's so silly. Sheldon: It's actually based on very sound theories; his mother published a paper on it. Penny: What was it called, "I Hate My Son and That's Why He Can't Have Cake"? Sheldon: It was obviously very effective. Leonard grew up to become an experimental physicist. Perhaps if she also denied him Christmas, he'd be a little better at it.

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    Notes (4)

    • The German episode title is "Die Erdnuss-Reaktion", the Italian title is "La reazione alle arachidi", the Spanish title is "La reacción al cacahuete", and the Mexican title is "La reacción al maní", all exact translations. The French title is "Réaction!".

    • International Airdates: Turkey: December 30, 2008 on CNBC-e; Germany: September 26, 2009 on ProSieben; Slovakia: September 9, 2011 on Markiza

    • John Shaffner, Francoise Cherry-Cohen, and Ann Shea were nominated for an Art Directors Guild Award in the Excellence In Production Design-Episode Of A Multi-Camera Television Series category for their work on this episode.

    • This episode's end titles has Chuck Lorre's Vanity Card #210.

    Trivia (1)

    • Penny asks Leonard if he'll be coming in to The Cheesecake Factory for his free birthday cheesecake slice. Actually, they only offer a free scoop of ice cream, with the option to purchase a specially decorated slice of cheesecake.

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