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 4)"): Season four of "Stargate SG-1", an American-Canadian television series, began airing on June 30, 2000 on Showtime.
Relevant evidence: Yes