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 regular cast members include Richard Dean Anderson, Michael Shanks, Amanda Tapping, Christopher Judge, and Don S. Davis.
Relevant evidence: Yes