Credits

• 2023 ·Leap of Faith: William Friedkin on The Exorcistas Self (archive footage)
• 2011 ·Miller's Taleas Self (Archive Footage)
• 2001 ·Hellsingas
• 2001 ·The Joe Spinell Storyas Self
• 1998 ·The Eternalas The Doctor
• 1998 ·The Fear of God: 25 Years of The Exorcistas Self - Father Karras
• 1996 ·Murdered Innocenceas Det. Rollins
• 1995 ·Mommyas Lt. March
• 1993 ·Rudyas Coach Ara Parseghian
• 1992 ·Small Killas Mikie
• 1990 ·The Exorcist IIIas Father Damien Karras / Patient X
• 1987 ·Deadly Careas Dr. Miles Keefer
• 1987 ·Light of Dayas Benjamin Rasnick
• 1984 ·A Touch of Scandalas Garrett Locke
• 1984 ·Toy Soldiersas Sarge
• 1982 ·Monsignoras Don Vito Appolini
• 1981 ·The Best Little Girl in the Worldas Clay Orlovsky
• 1980 ·Marilyn: The Untold Storyas Arthur Miller
• 1980 ·The Henderson Monsteras Dr. Tom Henderson
• 1980 ·The Ninth Configurationas Lt. Frankie Reno
• 1979 ·Vampireas John Rawlins
• 1978 ·The Dain Curseas Owen Fitzstephan
• 1977 ·A Dog Called... Vengeanceas Aristides Ungria
• 1977 ·The Devil's Advocateas Dr. Aldo Meyer
• 1975 ·F. Scott Fitzgerald in Hollywoodas F. Scott Fitzgerald
• 1975 ·A Home of Our Ownas Father William Wasson
• 1975 ·The Nickel Rideas Cooper
• 1974 ·The Horror Hall of Fame: A Monster Saluteas Self (archive footage)
• 1973 ·The Exorcistas Father Damien Karras