Spoiler: Zack's in This One

Credits include: Chicago, How the Grinch Stole Christmas, Cruel Intentions, Addams Family Values and Mamma Mia!

Credits include: Burn After Reading, The Big Bang Theory, Killers, Little Black Book and Alpha and Omega

Credits include: The Big Bang Theory, What the #$*! Do We Know?!, Speechless, Halloween and Movie Poster Contract

Brian Edmund Posehn (born July 6, 1966) is an American actor, voice actor, musician and comedian, known for his roles as mail clerk Kevin Liotta on NBC's Just Shoot Me!, a cast member and writer on HBO's Mr. Show, and most recently as Brian Spukowski on Comedy Central's The Sarah Silverman Program...(Wikipedia)

Credits include: Changeling, The Last House on the Left, Under the Silver Lake, Wednesday and Pulse

Credits include: The Big Bang Theory, Why Him?, Virtuosity, The Wedding Ringer and Hop

Credits include: Virgin Territory, Alphas, Kevin Can Wait, Alphas: Pilot and Cause and Effect

Credits include: God Grew Tired of Us, The Big Chase, Hour of Power, Back to the Danger: Part 1 and Back to the Danger: Part 2

Credits include: The Internship, Silicon Valley, Carry-On, The Belko Experiment and What Men Want

Credits include: Jurassic World, Blended, The To Do List, Between Two Ferns: The Movie and Holmes & Watson

Credits include: Fundraiser/Baspana Towlawal, Welcome to the Bully, Dog/Spai, Birthday/Kaleeza and Big Muddy

Credits include: Safer at Home