Sid Roth's It's Supernatural
2003
Taking to the stage at an early age, Mark found theatre to be a great way to overcome shyness, and he has since appeared in over 80 theatrical productions. His first taste of a movie set came in 1976 when he and his friends tried to sneak onto the set of The Shootist (John Wayne's final film) which was being shot in Carson City, Nevada where Mark lived at the time. imdb.com