2023
Leap of Faith: William Friedkin on The Exorcist as Self (archive footage)2011
Miller's Tale as Self (Archive Footage)2001
Hellsing as Not available2001
The Joe Spinell Story as Self1998
The Fear of God: 25 Years of The Exorcist as Self - Father Karras1998
The Eternal as The Doctor1996
Murdered Innocence as Det. Rollins1995
Mommy as Lt. March1993
Rudy as Coach Ara Parseghian1992
Small Kill as Mikie1990
The Exorcist III as Father Damien Karras / Patient X1987
Light of Day as Benjamin Rasnick1987
Deadly Care as Dr. Miles Keefer1984
Toy Soldiers as Sarge1984
A Touch of Scandal as Garrett Locke1982
Monsignor as Don Vito Appolini1981
The Best Little Girl in the World as Clay Orlovsky1980
The Ninth Configuration as Lt. Frankie Reno1980
Marilyn: The Untold Story as Arthur Miller1980
The Henderson Monster as Dr. Tom Henderson1979
Vampire as John Rawlins1978
The Dain Curse as Owen Fitzstephan1977
A Dog Called... Vengeance as Aristides Ungria1977
The Devil's Advocate as Dr. Aldo Meyer1975
The Nickel Ride as Cooper1975
F. Scott Fitzgerald in Hollywood as F. Scott Fitzgerald1975
A Home of Our Own as Father William Wasson1974
The Horror Hall of Fame: A Monster Salute as Self (archive footage)1973
The Exorcist as Father Damien Karras2016
Independence Day: Resurgence Post Production Supervisor1999
That Championship Season Screenplay1999
That Championship Season Theatre Play1989
A Mother's Courage: The Mary Thomas Story Writer1982
That Championship Season Director1982
That Championship Season Original Film Writer1982
That Championship Season Writer1980
Reward Writer