Guest Star: 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 15 appearances on The Big Bang Theory.
The Contractual Obligation Implementation
Season 6, Episode 18 - Aired March 7, 2013When 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 - Aired January 9, 2014When 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 - Aired October 3, 2016Amy and Penny attend a party at geologist Bert's house.
Appeared as Bert
The Fetal Kick Catalyst
Season 10, Episode 6 - Aired October 27, 2016Bert, Amy's geologist friend, is invited to Sheldon And Amy's dinner party.
Appeared as Bert
The Geology Elevation
Season 10, Episode 9 - Aired November 17, 2016Sheldon is jealous when Amy's geologist friend, Bert, wins the MacArthur Fellowship.
Appeared as Bert
The Allowance Evaporation
Season 10, Episode 16 - Aired February 16, 2017Sheldon 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 - Aired April 13, 2017When 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 - Aired November 9, 2017Bert 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 - Aired January 11, 2018When 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 - Aired May 10, 2018Bert attends Sheldon and Amy's wedding.
Appeared as Bert
The Wedding Gift Wormhole
Season 12, Episode 2 - Aired September 27, 2018When Sheldon and Amy can't figure out what their wedding gift from Leonard and Penny is, they take it to geologist Bert.
Appeared as Bert
The Imitation Perturbation
Season 12, Episode 6 - Aired October 25, 2018Bert attends Leonard and Penny's Halloween party.
Appeared as Bert
The Meteorite Manifestation
Season 12, Episode 14 - Aired January 31, 2019Bert asks for Raj's help with a meteorite that may contain organic matter.
Appeared as Bert
The Inspiration Deprivation
Season 12, Episode 19 - Aired April 18, 2019After Bernadette forces him to get rid of his scooter, Howard sells it to Bert.
Appeared as Bert
The Stockholm Syndrome
Season 12, Episode 24 - Aired May 16, 2019When Raj goes to Sweden for the Nobel prize ceremony, Bert doggy sits Cinnamon.
Appeared as Bert