John Patrick Mahon (February 2, 1938 - May 3, 2020) was an American film, stage and television actor. He was known for Armageddon (1998), L.A. Confidential (1997) and Zodiac (2007).
Baywatch
Series • 1989
The X-Files
Series • 1993
Frasier
JAG
Series • 1995
MacGyver
Series • 1985
Knots Landing
Series • 1979
Diagnosis: Murder
Profiler
Series • 1996
Star Trek: Enterprise
Series • 2001
Angel
Series • 1999
Crossing Jordan
St. Elsewhere
Series • 1982
Hill Street Blues
Series • 1981
The Rockford Files
Series • 1974
Touched by an Angel
Series • 1994
Knight Rider
T. J. Hooker
The Division
The Pretender
Just Shoot Me!
Series • 1997
Arli$$
Jake and the Fatman
Series • 1987
Hunter
Series • 1984
Police Woman
Scarecrow and Mrs. King
Series • 1983
Zoey 101
Series • 2005
The Exorcist
Movie • 1973
Kojak
Series • 1973
Zodiac
Movie • 2007
Crazy like a Fox