Guest Star: Jack McBrayer

Jack McBrayer

Jack McBrayer is an American actor best known for his role as Kenneth Parcell in NBC's 30 Rock and for the characters he played in sketches of Late Night with Conan O'Brien. Most recently, McBrayer has had a recurring role on ABC's The Middle.

On the silver screen, McBrayer lent his voice to characters in Wreck-It Ralph and Despicable Me, and appeared in the 2008 film Forgetting Sarah Marshall.

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

  • The Conjugal Conjecture

    Season 10, Episode 1 - The Conjugal Conjecture
    Aired September 19, 2016

    Penny's brother, Randall, comes to town with his parents for Leonard and Penny's second wedding.

    Appeared as Randall

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