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Stargate Birthday - June 7th - Gatecast
John Ulmer John played three roles on Stargate SG1, a member of SG5 in Heroes, a Jaffa in Full Circle and a Fire-fighter in The Changling. He has also worked on Stargate Continuum as a stunt man and also been involved with Hot Tub Time Machine, I, Robot, The Core, Continuum and Deep Rising. IMDB