Actor:
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1. NewsRadio (1995), series...Brian
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2. Mr. Show with Bob and David (1995), series
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3. Just Shoot Me! (1997), series...Kevin Liotta
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4. Comedy Central Presents (1998), series...Self
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5. Reckless + Wild (2000), film...Auteur #2
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...Store Clerk
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7. Grind (2003), film...Orville the Scraggly Guy
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8. The Devil's Rejects (2005), film...Jimmy
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9. Sleeping Dogs Lie (2006), film...Randy
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...Self - Audience
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11. Metalocalypse (2006), series...Melward Fjordslorn
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12. Careless (2007), film...Officer Fred
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...Wedding Minister
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14. Undead or Alive: A Zombedy (2007), film...Ben
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15. Smiley Face (2007), film...Bus Driver
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16. The Big Bang Theory (2007), series...Bert Kibbler
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17. Sex Drive (2008), film...Carney
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18. Doubting Thomas (2008), film...Grissom
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19. Uncle Grandpa (2010), series...Charlie Burgers
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20. Sym-Bionic Titan (2010), series
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21. Lloyd the Conqueror (2011), film...Andy
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22. Knights of Badassdom (2013), film...Gilberto
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23. Steven Universe (2013), series...Sour Cream
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24. Brian Posehn: The Fartist (2013), film
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25. Uncle Nick (2015), film...Uncle Nick
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26. Minecraft: Story Mode (2015), series
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27. Brian Posehn: Posehn 25x2 (2017), film...Self
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...Cultist
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29. Deadly Class (2018), series...Shandy
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30. The Last Blockbuster (2020), film...Self - The Big Bang Theory, Mr. Show
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31. Reno 911: Aboot Q Eh (2021), film...QAnon Cruise Passenger
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32. Dragons Rescue Riders: Heroes of the Sky (2021), series...Gludge
Writer:
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1. Metalocalypse (2006), series...(story)
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...(additional material)
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3. Brian Posehn: Posehn 25x2 (2017), film
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...(story by)
Producer:
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1. Uncle Nick (2015), film
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2. Brian Posehn: Posehn 25x2 (2017), film...executive producer
Voice:
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1. Brother Bear (2003), film...Additional Voice
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2. Surf's Up (2007), film...Glen Maverick
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3. Scooby-Doo! Abracadabra-Doo (2010), film...Marlon Whirlen
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4. Hell and Back (2015), film...Cleb the Carny
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...Mr. Rected