He appeared in supporting roles in such films as Dune (1984), Paris, Texas (1984), To Live and Die in L.A. (1985), Blue Velvet (1986), Beverly Hills Cop II (1987), and Tucker: The Man and His Dream (1988). He received further critical acclaim for his performance in Married to the Mob (1988), for which he was nominated for the Academy Award for Best Supporting Actor. He subsequently had roles in The Player (1992), Air Force One (1997), The Rainmaker (1997) and The Manchurian Candidate (2004).
His television roles include Rear Admiral Albert "Al" Calavicci in Quantum Leap (1989β1993), Navy Secretary Edward Sheffield on JAG (2002β2004), and Brother Cavil on Battlestar Galactica (2004β2009). Following his roles on Quantum Leap and Battlestar Galactica, he appeared at numerous science fiction conventions. He retired from acting in 2015 following health issues and focused his later life on sculpture and other visual art.
Description above from the Wikipedia article Dean Stockwell, licensed under CC-BY-SA, full list of contributors on Wikipedia.