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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.
The Independent
as Guard
Beyond Belief: Fact or Fiction
as Jerome Metz (segment "The Magic Rose Garden")
Vegas Vacation
as Hoover Dam Guide
Mars Attacks!
as Speaker of the House
ER
as Mitchell
Last Action Hero
as Watch Commander
JFK
as Judge Haggerty
Come See the Paradise
as Brennan
The Knife and Gun Club
as Mr. Warshawski
The Last of the Finest
as Tommy Grogan
Big Man on Campus
as Judge Ferguson
Finish Line
as Purdy Hall
An American Tail
as Warren T. Rat (voice)
Big Trouble
as Det. Murphy
The Deacon Street Deer
as Sidney
Matlock
as Mr. Gillespie
The Journey of Natty Gann
as Logging Boss
The Hoboken Chicken Emergency
as Policeman
Murder, She Wrote
as Uncle Charlie
The Natural
as Sam Simpson
Love Streams
as Taxi Driver (Animals)
Terror at Alcatraz
as Murphy
Rehearsal for Murder
as Damon
Gloria
as Frank
Little Miss Marker
as Casino Clerk
The In-Laws
as Deliveryman #1
Bloodbrothers
as Bartender
The Amazing Spider-Man
Nowhere to Run
as O'Neil
Opening Night
as Bobby
Heroes
as Mr. Munro
Lucan
as Jess
Nickelodeon
as Kathleen's Director
Quincy, M.E.
as Joe Ives
Rich Man, Poor Man - Book II
as Reporter
Street Killing
as Alex Lesko
The Killing of a Chinese Bookie
as Taxi Driver
Mallory: Circumstantial Evidence
as Deputy Marshal Vieter
Capone
as N.Y. Police Lt.
Conspiracy of Terror
as Sgt. Carroll
Ellery Queen: Too Many Suspects
as Matthew Thomas Cleary
A Woman Under the Influence
as Clancy
Terror on the 40th Floor
as Stark
Play It as It Lays
as Frank
Banacek
as Lt. Hallohan
Columbo
as Guard
McCloud
as Doorman
