(1987) Light of Day

as Benjamin Rasnick

(1990) The Exorcist III

as Father Damien Karras / Patient X

(1973) The Exorcist

as Father Damien Karras

(1975) The Nickel Ride

as Cooper

(1974) The Horror Hall of Fame: A Monster Salute

as Self (archive footage)

(1980) The Ninth Configuration

as Lt. Frankie Reno

(1998) The Eternal

as The Doctor

(1977) A Dog Called... Vengeance

as Aristides Ungria

(1998) The Fear of God: 25 Years of The Exorcist

as Self - Father Karras

(1982) Monsignor

as Don Vito Appolini

(2011) Miller's Tale

as Self (Archive Footage)

(1984) Toy Soldiers

as Sarge

(2023) Leap of Faith: William Friedkin on The Exorcist

as Self (archive footage)

(1980) The Henderson Monster

as Dr. Tom Henderson

(1980) Marilyn: The Untold Story

as Arthur Miller

(1987) Deadly Care

as Dr. Miles Keefer

(1979) Vampire

as John Rawlins

(1977) The Devil's Advocate

as Dr. Aldo Meyer

(1996) Murdered Innocence

as Det. Rollins

(1981) The Best Little Girl in the World

as Clay Orlovsky

(1993) Rudy

as Coach Ara Parseghian

(1975) A Home of Our Own

as Father William Wasson

(1984) A Touch of Scandal

as Garrett Locke

(1992) Small Kill

as Mikie

(1975) F. Scott Fitzgerald in Hollywood

as F. Scott Fitzgerald

(2001) The Joe Spinell Story

as Self

(1995) Mommy

as Lt. March

(2001) Hellsing

as ---

(1978) The Dain Curse

as Owen Fitzstephan