Guest Star: Craig Welzbacher

You are viewing a list of Craig Welzbacher's 1 appearance on The Big Bang Theory.

  • The 2003 Approximation

    Season 9, Episode 4 - The 2003 Approximation
    Aired October 12, 2015

    When Sheldon learns that Leonard has moved out and is now living with Penny, he reverts to 2003 - a simpler time before he met Leonard and Penny. Howard and Raj form a folk sci-fi band to play live music at Stuart's Comic Book Store.

    Appeared as Candidate #1

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