John Finnegan
John Finnegan is credited on 25 movies and 10 TV shows, best known by TMDB votes for Mars Attacks!, Last Action Hero and JFK.
Born August 18, 1926 in New York City, New York, USA; died July 29, 2012.
Filmography · 35 titles
US streaming apps shown for the 12 best-known titles, checked October 5, 2026. Tap any title for where it streams and what it costs.
Mars Attacks!
1996 · Movie
Free with ads on Kanopy
Last Action Hero
1993 · Movie
On Sony Pictures Core
JFK
1991 · Movie
On Howdy
An American Tail
1986 · Movie
Not on a US subscription app
ER
1994 · TV show
On HBO Max and Hulu
Columbo
1971 · TV show
On Peacock and Prime Video
The Natural
1984 · Movie
On Sony Pictures Core
Vegas Vacation
1997 · Movie
On AMC+ and Philo
A Woman Under the Influence
1974 · Movie
On HBO Max
Murder, She Wrote
1984 · TV show
On Philo
The Killing of a Chinese Bookie
1976 · Movie
On HBO Max
Opening Night
1977 · Movie
On HBO Max
Gloria
1980 · Movie
The Journey of Natty Gann
1985 · Movie
Love Streams
1984 · Movie
Matlock
1986 · TV show
The In-Laws
1979 · Movie
Quincy, M.E.
1976 · TV show
Capone
1975 · Movie
Beyond Belief: Fact or Fiction
1997 · TV show
McCloud
1970 · TV show
Come See the Paradise
1990 · Movie
Nickelodeon
1976 · Movie
Little Miss Marker
1980 · Movie
The Amazing Spider-Man
1978 · TV show
The Last of the Finest
1990 · Movie
Big Trouble
1986 · Movie
Heroes
1977 · Movie
Bloodbrothers
1978 · Movie
Banacek
1972 · TV show
Big Man on Campus
1989 · Movie
Play It as It Lays
1972 · Movie
Rehearsal for Murder
1982 · Movie
The Independent
2000 · Movie
Rich Man, Poor Man - Book II
1976 · TV show
About John Finnegan
John P. "J.P." Finnegan was an American film and television actor, mostly known for his recurrent role on the American crime fiction series Columbo. He voiced the villainous character Warren T. Rat in the 1986 Don Bluth film An American Tail.
Biography from TMDB, written by its community.