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.
Cast

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
The Knife and Gun Club
Mr. Warshawski

Come See the Paradise
Brennan

Finish Line
Purdy Hall

Street Killing
Alex Lesko

Vegas Vacation
Hoover Dam Guide