Guest Star: Brian Posehn

Brian Posehn

Brian Posehn is an American actor, comedian and voice actor, perhaps best known for his recurring roles on Just Shoot Me! and The Sarah Silverman Program. He has also provided voices for series including Mission Hill, Out of Jimmy's Head and Symb-Bionic Titan.

Alongside his appearances as Bert the geologist on The Big Bang Theory, Brian Posehn has also recently had a recurring role on FOX's New Girl.

On the big screen, Posehn has appeared in films including Dumb and Dumberer: When Harry Met Lloyd, Grind, Fantastic 4: Rise of the Silver Surfer, and has also provided voices in Surf's Up and Captain Underpants: The First Epic Movie.

You are viewing a list of Brian Posehn's 12 appearances on The Big Bang Theory.

  • The Contractual Obligation Implementation

    Season 6, Episode 18 - The Contractual Obligation Implementation
    Aired March 7, 2013

    When Raj decides to have a silent 'text date' with Lucy at the library, Bert tries to join them at the table.

    Appeared as Bert

  • The Occupation Recalibration

    Season 7, Episode 13 - The Occupation Recalibration
    Aired January 9, 2014

    When Bert brings Amy pretty rocks he's found as a gift, Amy is oblivious to the fact he has a crush on her. Howard and Raj try to let Bert down gently.

    Appeared as Bert

  • The Dependence Transcendence

    Season 10, Episode 3 - The Dependence Transcendence
    Aired October 3, 2016

    Amy and Penny attend a party at geologist Bert's house.

    Appeared as Bert

  • The Fetal Kick Catalyst

    Season 10, Episode 6 - The Fetal Kick Catalyst
    Aired October 27, 2016

    Bert, Amy's geologist friend, is invited to Sheldon And Amy's dinner party.

    Appeared as Bert

  • The Geology Elevation

    Season 10, Episode 9 - The Geology Elevation
    Aired November 17, 2016

    Sheldon is jealous when Amy's geologist friend, Bert, wins the MacArthur Fellowship.

    Appeared as Bert

  • The Allowance Evaporation

    Season 10, Episode 16 - The Allowance Evaporation
    Aired February 16, 2017

    Sheldon and Amy spot a dejected Bert in a restaurant as they enjoy date night together. When they invite Bert over, Amy learns that Sheldon has been sharing inappropriate information about their relationship with other people.

    Appeared as Bert

  • The Separation Agitation

    Season 10, Episode 21 - The Separation Agitation
    Aired April 13, 2017

    When Bert introduces the gang to his new girlfriend, Rebecca, they get the feeling she's with him for his money.

    Appeared as Bert

  • The Geology Methodology

    Season 11, Episode 7 - The Geology Methodology
    Aired November 9, 2017

    Bert offers Sheldon the chance to work with him on dark matter research, but Sheldon's sense of superiority soon offends Bert.

    Appeared as Bert

  • The Solo Oscillation

    Season 11, Episode 13 - The Solo Oscillation
    Aired January 11, 2018

    When Raj hears Bert's original song about boulders (specifically the one which chases Indian Jones), he invites Bert to join Footprints on the Moon.

    Appeared as Bert

  • The Bow Tie Asymmetry

    Season 11, Episode 24 - The Bow Tie Asymmetry
    Aired May 10, 2018

    Bert attends Sheldon and Amy's wedding.

    Appeared as Bert

  • The Wedding Gift Wormhole

    Season 12, Episode 2 - The Wedding Gift Wormhole
    Aired September 27, 2018

    Sheldon and Amy drive themselves crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding. Also, Koothrappali decides he wants to settle down and asks his father to arrange a marriage for him.

    Appeared as Bert

  • The Imitation Perturbation

    Season 12, Episode 6 - The Imitation Perturbation
    Airs October 25, 2018

    When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Also, Leonard is shocked that Penny doesn't remember their first kiss.

    Appeared as Bert

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