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.
Nowhere to Run
O'Neil
Love Streams
Taxi Driver (Animals)
An American Tail
Warren T. Rat (voice)
The Independent
Guard
The Hoboken Chicken Emergency
Policeman
Gloria
Frank
The Deacon Street Deer
Sidney
Big Trouble
Det. Murphy
Nickelodeon
Kathleen's Director
The In-Laws
Deliveryman #1
Mars Attacks!
Speaker of the House
Ellery Queen: Too Many Suspects
Matthew Thomas Cleary
Mallory: Circumstantial Evidence
Deputy Marshal Vieter
Lucan
Jess
Heroes
Mr. Munro
Terror at Alcatraz
Murphy
Big Man on Campus
Judge Ferguson
Bloodbrothers
Bartender
JFK
Judge Haggerty
The Journey of Natty Gann
Logging Boss
Last Action Hero
Watch Commander
The Natural
Sam Simpson
Rehearsal for Murder
Damon
A Woman Under the Influence
Clancy
Play It as It Lays
Frank
Opening Night
Bobby
Conspiracy of Terror
Sgt. Carroll
The Last of the Finest
Tommy Grogan
Little Miss Marker
Casino Clerk
Capone
N.Y. Police Lt.
Terror on the 40th Floor
Stark
The Killing of a Chinese Bookie
Taxi Driver
Come See the Paradise
Brennan
Finish Line
Purdy Hall
Street Killing
Alex Lesko
Vegas Vacation
Hoover Dam Guide