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.
Nickelodeon
The Last of the Finest
An American Tail
Rehearsal for Murder
JFK
Capone
Gloria
Mars Attacks!
Last Action Hero
The Natural
The In-Laws
A Woman Under the Influence
The Killing of a Chinese Bookie
Opening Night
The Journey of Natty Gann
Big Man on Campus
Little Miss Marker
Love Streams
Come See the Paradise
Big Trouble
