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Gary Jones is a British-born Canadian actor, who has worked on television and on stage both in his native United Kingdom and Canada. He is known for his recurring role as the stargate technician CMSgt. Walter Harriman in Stargate SG-1 and Stargate Atlantis. He has also made guest appearances on such shows as Sliders, Cold Squad, The Outer Limits, Andromeda and Dead Like Me. Wikipedia