John Mahon and Jason Miller in L'esorcista (1973)

Wes Craven, Ving Rhames, Sandi Sissel, Brandon Quintin Adams, Stuart M. Besser, Yan Birch, Conni Marie Brazelton, Bill Cobbs, James Coblentz, Josh Coxx, Wayne Daniels, John Hostetter, Danny Kopel, Michael Kopelow, A.J. Langer, Marianne Maddalena, John Mahon, Everett McGill, Kelly Jo Minter, Don Peake, Jeremy Roberts, Wendy Robie, and Sean Whalen in La casa nera (1991)

Guy Pearce, John Mahon, and Ron Rifkin in L.A. Confidential (1997)

James Cromwell and John Mahon in L.A. Confidential (1997)