(2004). Armstrong provided the voices for Mr. Moleguaco and Mr. Bugspit on the Disney Channel original series The Emperor's New School and The Buzz on Maggie. Armstrong was also in Akeelah and the Bee. He played "Farley", a fictional composite character based on members of Elvis Presley's real entourage in the 1997 cult-comedy film Elvis Meets Nixon. He also had a bit part as "Russ" on the short-lived TV show Reaper. Armstrong was cast in the 2000 film Shanghai Noon as Wild West hawker Bulldog Drummond, but all three scenes in which his character appears were cut from the film during the editing phase. He voices "Snot" on the animated sitcom American Dad!, parodying his role from Revenge of the Nerds. He also had a role as Double Wide in the cartoon series Stroker and Hoop on Adult Swim. He appeared in the 2006 production of Akeelah and the Bee as Mr. Welch. He was on VH1's 100 Greatest Teen Stars despite being thirty when he played his first role. He played "Mecklen" in the 2007 film, Smokin' Aces. In the feature film Ray, for preparation for his role as music executive Ahmet Ertegun, he had the top part of his head shaved to simulate male pattern baldness. He guest starred in episode 10 — "Much Too Much" — and had a much smaller part in episode 11 — "Owner of a Lonely Heart" — in season two of Grey's Anatomy. Armstrong played a deejay named Jerry Thunder on That '70s Show, episode 315, "Radio Daze." In 2006 Armstrong was in an episode of Boston Legal. In 2008, he guest starred on the iCarly episode "iStakeout" as a convenience store clerk who was suspected of making unauthorized copies of films. In 2009 he appeared in Ratko: The Dictator's Son, and Locker 13. He played fictional astronaut Chaz Dalton on an episode of the TV series My Name is Earl. From 2008–2013 he portrayed Dr Parker/Dr Dawson on The Game. 2009 found Armstrong playing a paranoid character in a mental institution on the House season six premiere, "Broken". Also in 2009 Armstrong appeared in American Pie Presents: The Book of Love, as a teacher obsessed with the principal of the school, and he also appeared as a bumbling bandit in the film Gold Retrievers. In 2010, Armstrong made a guest appearance on the television show Glory Daze and began voicing the