Bruce William Boxleitner (born May 12, 1950) is an American (United States) actor, and science fiction and suspense writer. He is known for his leading roles in the television series How the West Was Won (How the West Was Won (TV series)), Bring Em Back Alive, Scarecrow and Mrs. King (with Kate Jackson), and Babylon 5 (as John Sheridan in seasons 2-5, 1994-1998). He is also known for his role as the titular character of the innovative Walt Disney Pictures film Tron (Tron (film)), a role which he will reprise in the anticipated 2010 (2010 in film) sequel, Tron: Legacy.