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Worked with Richard Dean Anderson before the Stargate SG-1 series; he was Dana Elcar's body double on MacGyver. A former captain in the US Army, stationed in Korea in the 1970s. Is also a skilled artist and woodcraftsman Among his most important guest-appearances for TV was the part of Captain William Scully, Dana Scully's father, on The X-Files. Has appeared in three different productions which featured a character named Dr. Weir: The 6th Day, Stargate SG-1 and Stargate: Atlantis. Is a frequent co-star of Jay Brazeau. Has appeared in episodes of four different series with Bruce Harwood: MacGyver, The X-Files, Honey, I Shrunk the Kids: The TV Show and Stargate SG-1. Has appeared in four different productions with Michael Shanks: A Family Divided, Stargate SG-1, The Artist's Circle and Suspicious River. Has appeared with Steve Bacic in four different productions: She Stood Alone: The Tailhook Scandal, Stargate SG-1, The 6th Day and Andromeda. Is a frequent co-star of Jerry Wasserman. Although Peter Williams was the main recurring guest star on Stargate SG-1 for four years, he and Davis only shared a scene in three episodes: "Children of the Gods", "Serpent's Song" and "Point of View". Appeared in episodes of two different series entitled "Crossroads": The Sentinel and Stargate SG-1. There is also an episode of the latter series entitled "The Sentinel". Son of MT Davis.