He played astronaut Dave Bowman in Stanley Kubrick's 2001: A Space Odyssey and appeared in Black Christmas. As a television actor, he has appeared on Ed, Brave New World, and Law & Order.
He was a student at both Rutgers University and San Francisco State.
Both of his parents had brief cameos in his movies.
He married his fourth wife, Mia Dillon, in 1999.
He costarred with Olivia Hussey in Black Christmas.