Question: When was the American actor and producer born who was lead actor in the television series "MacGyver" (1985–1992) and also present in Season four of "Stargate SG-1"?
Sentence (from "Stargate SG-1 (season 8)"): Season eight of "Stargate SG-1", an American-Canadian military science fiction television series, began airing on July 9, 2004 on the Sci Fi channel.
Relevant evidence: No