James Gammon is an American actor best known for his role as Nick Bridges, the father of Don Johnson's title character, on the television series Nash Bridges, from 1996-2001.
He also played the character of Zack Rosswell in eight episodes of The Waltons, and appeared in eight episodes of Homefront in the role of Coach Zelnick, from 1992-1993.
Gammon is also known for appearing in television series and movies of the Western genre.
Other television shows Gammon has appeared in include The Wild Wild West (his screen debut in 1966), Bonanza, The High Chaparral, Gunsmoke, Charlie's Angels, Murder, She Wrote, The Young Indiana Jones Chronicles, L.A. Law, LAX, Monk, Crossing Jordan and Grey's Anatomy.
Feature films he has acted in include Cool Hand Luke (1967), Journey to Shiloh (1968), A Man Called Horse (1970), Bobbie Jo and the Outlaw (1976), Urban Cowboy (1980), Silverado (1985), Ironweed (1987), The Milagro Beanfield War (1988), Leaving Normal (1992), The Adventures of Huck Finn (1993), Wyatt Earp (1994), Natural Born Killers (1994), The Man in the Iron Mask (1998), Point Blank (1998), The Cell (2000), Cold Mountain (2003), Outlaw Trail (2006) and The Final Season (2007).