Paul 'Poppy' Davitch
Back When We Were Grownups (2004)
Allan Van Praagh
Living with the Dead (2002)
Prancer Returns (2001)
Narrator (voice)
The Omen Legacy (2001)
John Witting
Sarah, Plain and Tall: Winter's End (1999)
(archive footage)
Joe D'Amato Totally Uncut - The Erotic Experience (1999)
Long John Silver
Treasure Island (1999)
Ebenezer Scrooge
Ebenezer (1998)
Beelzebub
The Incredible Adventures of Marco Polo (1998)
Bob Greiser
I'll Be Home For Christmas (1997)
Host
Monster Mania (1997)
Self
In Search of Dracula (1996)
Self (archive footage)
Joan Crawford: Always the Star (1996)
Rod Serling: Submitted for Your Approval (1995)
Bartle Bone
Buffalo Girls (1995)
Lord Rothbart (voice)
Svaneprinsessen (1994)
Duke Page
City Slickers II: The Legend of Curly's Gold (1994)
Dr. Jeremy Wheaton (segment "Where the Dead Are")
The Twilight Zone: Rod Serling's Lost Classics (1994)
Jake Stone
Cops & Robbersons (1994)
Mercy
Cyborg 2 (1993)
Legends of the West (1992)
Travis
Solar Crisis (1992)
Overstreet
Keep the Change (1992)
Curly Washburn
City Slickers (1991)
Yves Perret
Tango og Cash (1989)
Grissom
Batman (1989)
Xeno
Outlaw of Gor (1988)
L. G. Murphy
Young Guns (1988)
Rudi Cox
Out of Rosenheim (1987)
Xenos
Gor (1987)
Night of 100 Stars II (1985)
George Stevens: A Filmmaker's Journey (1985)
Self (archive footage) (uncredited)
Hollywood Out-takes and Rare Footage (1983)
Frank Hawkes
Alone in the Dark (1982)
Narration
The Helm of Destiny (1982)
Narrator
Psychic Confession (1982)
Stokes
Evil Stalks This House (1981)
Joe Taylor
Without Warning (1980)
Voltan
Hawk the Slayer (1980)
Whitey Robinson
The Golden Moment: An Olympic Love Story (1980)
Marc Kazarian
The Ivory Ape (1980)
Will Smith
The Last Ride of the Dalton Gang (1979)
Raphael
Cocaine Cowboys (1979)
Jim Buck
Portrait of a Hitman (1979)
Omus
The Shape of Things to Come (1979)
Mike Farrell
Angels' Brigade (1979)
Lieutenant Wade
The One Man Jury (1978)
Himself - Host
Unknown Powers (1978)
Frendlander
Welcome to Blood City (1977)
National Geographic: The Volga (1977)
Self - Host
The Unknown Force (1977)
Duke
Sangue di sbirro (1976)
Scarface' Manzari
I padroni della città (1976)
Judas Carmichael
Eva nera (1976)
Norman Shelley / Richard J. Russo
Squadra antiscippo (1976)
Sam Clayton
Diamante Lobo (1976)
van Daalen
Safari Express (1976)
Mr. Kitch
L'infermiera (1975)
Rickles (1975)
Robert Preston / Willaim Hunter
Africa Express (1975)
Vic Morono, the Boss
The Four Deuces (1975)
William Bates
Il richiamo del lupo (1975)
Devil Anse Hatfield
The Hatfields and the McCoys (1975)
Rourke
The Godchild (1974)
Dracula
Dracula (1974)
Neal Mottram
Craze (1974)
Hellman
Oklahoma Crude (1973)
Hillman
Blu Gang e vissero per sempre felici e ammazzati (1973)
Imagine (1972)
Buck Santini
Tedeum (1972)
Quincey Whitmore
Chato's Land (1972)
Sonny Bronson
Harde never, varme colter (1972)
Tursen
The Horsemen (1971)
John
Vamos a matar, compañeros (1970)
Chet Rollins
Monte Walsh (1970)
Kolby
The McMasters (1970)
Charley MacPherson
La legione dei dannati (1969)
Fidel Castro
Che! (1969)
Antonin
Marquis de Sade: Justine (1969)
Major John Heston
Hora cero: Operación Rommel (1969)
Parson Josiah Galt
The Desperados (1969)
Ricciolo ("Curly")
Il mercenario (1968)
Douglas
Las Vegas: 500 millones (1968)
Dr. Jekyll/Dr.Hyde
The Strange Case of Dr. Jekyll and Mr. Hyde (1968)
Rick Masters
Kill a Dragon (1967)
Ronald Wyatt (segment 4 "The Man Who Collected Poe")
Torture Garden (1967)
Jeremy Prokosch (archive footage)
Cinéastes de notre temps : Le Dinosaure et le Bébé, dialogue en huit parties entre Fritz Lang et Jean-Luc Godard (1967)
Louis Strago
The Spy in the Green Hat (1967)
And Still Champion! The Story of Archie Moore (1967)
Jabberwock
Alice Through the Looking Glass (1966)
Jesus Raza
The Professionals (1966)
Walter Pedak
Once a Thief (1965)
Himself
Paparazzi (1964)
Le Parti des choses : Bardot et Godard (1964)
Jeremy Prokosch
Le Mépris (1963)
Jack
La guerra continua (1962)
Herr Bauer / Schneider
Il Criminale (1962)
Torvald
Barabbas (1961)
Matteoni
Il giudizio universale (1961)
Ogataï
I mongoli (1961)
Alboino
Rosmunda e Alboino (1961)
Revak
The Barbarians (1960)
Gen. Weirother
Austerlitz (1960)
Jim Gatsby
Flor de mayo (1959)
Eric Koertner
Ten Seconds to Hell (1959)
Milo March
The Man Inside (1958)
Arnie Judlow / Bill Judlow
House of Numbers (1957)
Manolete
The Death of Manolete (1957)
Jacob Wade
The Lonely Man (1957)
Monroe Stahr
The Last Tycoon (1957)
Harlan 'Mountain' McClintock
Requiem for a Heavyweight (1956)
Joe Costa
Attack (1956)
Roy Earle / Roy Collins
I Died a Thousand Times (1955)
Charles Castle
The Big Knife (1955)
El Tigre
Kiss of Fire (1955)
Simon The Magician
The Silver Chalice (1954)
Attila
Sign of the Pagan (1954)
Slade
Man in the Attic (1953)
Gil Walker
Flight to Tangier (1953)
Toriano
Arrowhead (1953)
Cappy Gordon
Second Chance (1953)
Jack Wilson
Shane (1953)
Lester Blaine
Sudden Fear (1952)
Pigeon Lane
Okinawa (1951)
Blackie
Panic in the Streets (1950)
Executive Producer