Michael Moriarty (born April 5, 1941) is an American - Canadian stage and screen actor and jazz musician. He received an Emmy Award and Golden Globe Award for his first acting role on American television as a Nazi SS officer in the 1978 mini-series Holocaust, and he played Executive Assistant District Attorney Benjamin Stone for the first four seasons (1990 -- 1994) on the television show Law & Order. Moriarty is also known for his roles in films such as Bang the Drum Slowly, Who 'll Stop the Rain, Q: The Winged Serpent, The Stuff, Pale Rider, Troll, Courage Under Fire, and Shiloh.
what actor played ben stone on law and order
Michael Moriarty