Filmography:

• Santa's Slay (2004) [post production]..........Darren
• Elf (2003)..........Walter
• "Las Vegas" (2003) TV Series..........Ed Deline
• This Thing of Ours (2003) .... Jimmy 'the con'
• Dallas 362 (2003) .... Walter
• Dogville (2003) .... The Big Man
• Incredible Mrs. Ritchie, The (2003) (TV) .... Mr. Harry Dewitt
• Jericho Mansions (2003) .... Leonard Grey
• Blood Crime (2002) (TV) .... Sheriff Morgan McKenna
• City of Ghosts (2002) .... Marvin
• Lathe of Heaven (2002) (TV) .... Dr. Haber
• Night at the Golden Eagle (2002) (uncredited) .... Prison Warden
• In the Shadows (2001) .... Lance Huston
• Viva Las Nowhere (2001) .... Roy Baker
• Glimpse of Hell, A (2001) (TV) .... Capt. Fred Moosally
• Warden of Red Rock (2001) (TV) .... John Flinders
• Way of the Gun, The (2000) .... Joe Sarno
• Luckytown (2000) .... Charlie Doyles
• Yards, The (2000) .... Frank Olchin
• Mickey Blue Eyes (1999) .... Frank Vitale
• Poodle Springs (1998) (TV) .... Philip Marlowe
• This Is My Father (1998/I) .... Kieran Johnson
• Bulletproof (1996) .... Frank Colton
• Eraser (1996) .... U.S. Marshal Robert Deguerin
• Boy Called Hate, A (1996) .... Jim
• Bottle Rocket (1996) .... Abe Henry (Mr. Henry)
• Tashunga (1996) .... Sean McLennon
• Flesh and Bone (1993) .... Roy Sweeney
• Program, The (1993) .... Sam Winters
• Godfather Trilogy: 1901-1980, The (1992) (V) .... Santino 'Sonny' Corleone
• Honeymoon in Vegas (1992) .... Tommy Korman
• For the Boys (1991) .... Eddie Sparks
• Dark Backward, The (1991) .... Doctor Scurvy
• Misery (1990) .... Paul Sheldon
• Dick Tracy (1990) .... Spaldoni
• Alien Nation (1988) .... Det. Sgt. Matthew Sykes
• Gardens of Stone (1987) .... Clell Hazard
• "Uns et les autres, Les" (1983) (mini) TV Series .... Glenn Sr./Glenn Jr.
• Kiss Me Goodbye (1982) .... Jolly Villano
• Uns et les autres, Les (1981) .... Jack Glenn/Jason Glenn
• Thief (1981) .... Frank
• Hide in Plain Sight (1980) .... Thomas Hacklin
• 1941 (1979) (uncredited) .... Sailor in Fight
• Chapter Two (1979) .... George Schneider
• Superstunt (1978) (TV)
• Comes a Horseman (1978) .... Frank 'Buck' Athearn
• Un autre homme, une autre chance (1977) .... David Williams
• Bridge Too Far, A (1977) .... SSgt. Eddie Dohun
• Harry and Walter Go to New York (1976) .... Harry Dighby
• Gone with the West (1976) .... Jud McGraw
• Killer Elite, The (1975) .... Mike Locken
• Rollerball (1975) .... Jonathan E.
• Funny Lady (1975) .... Billy Rose
• Freebie and the Bean (1974) .... Freebie
• Godfather: Part II, The (1974) (uncredited) .... Sonny Corleone
• Gambler, The (1974) .... Axel Freed
• Cinderella Liberty (1973) .... John Baggs Jr.
• Slither (1972) .... Dick Kanipsia
• Godfather, The (1972) .... Santino 'Sonny' Corleone
• Brian's Song (1971) (TV) .... Brian Piccolo
• T.R. Baskin (1971) .... Larry Moore
• Rabbit, Run (1970) .... Rabbit Angstrom
• Rain People, The (1969) .... Jimmy Kilgannon (Killer)
• Submarine X-1 (1968) .... Cmdr. Richard Bolton, RNVR
• Journey to Shiloh (1968) .... Buck Burnett
• Countdown (1968) .... Lee Stegler
• Games (1967) .... Paul Montgomery
• El Dorado (1966) .... Alan Bourdillion Traherne ('Mississippi')
• Red Line 7000 (1965) .... Mike
• Glory Guys, The (1965) .... Pvt. Anthony Dugan
• Lady in a Cage (1964) .... Randall
• Irma la Douce (1963) (uncredited) .... Soldier with radio