Dunham and Achmed the Dead Terrorist, February 2009. Jeffrey Jeff Dunham (born April 18, 1962) is an American ventriloquist, voice artist, and comedian. He has appeared on many television programs. He has four specials that are shown on Comedy Central: Jeff Dunham: Arguing with Myself, Jeff Dunham: Spark of Insanity, Jeff Dunham's Very Special Christmas Special, and Jeff Dunham: Controlled Chaos.