Brian Posehn is an American actor. He is known for playing Bert in The Big Bang Theory. He also appeared in the role of a postman in episode 18 of season 2 of Friends (The One Where Dr. Ramoray Dies) aired on March 21, 1996. 

Brian Posehn playing Bert who works in the Geology Lab.


  • He is probably the only actor who is in the two most popular sitcoms of two decades, but Ken Lerner also appeared in Friends (S9 Ep20 Professor Spafford) and The Big Bang Theory (Mrs. Wolowitz’s dentist boyfriend, Dr. Schneider)