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.
as Guard
as Jerome Metz (segment "The Magic Rose Garden")(1 ep)
as Hoover Dam Guide
as Speaker of the House
as Mitchell(1 ep)
as Watch Commander
as Judge Haggerty
as Brennan
as Mr. Warshawski
as Tommy Grogan
as Judge Ferguson
as Purdy Hall
as Warren T. Rat (voice)
as Det. Murphy
as Sidney
as Mr. Gillespie(2 eps)
as Logging Boss
as Policeman
as Uncle Charlie(1 ep)
as Douglas Foudy(1 ep)
as Sam Simpson
as Taxi Driver (Animals)
as Murphy
as Damon
as Frank
as Casino Clerk
as Deliveryman #1
as Bartender
as O'Neil
as Bobby
as Mr. Munro
as Jess
as Kathleen's Director
as Joe Ives(1 ep)
as Reporter(1 ep)
as Alex Lesko
as Taxi Driver
as Deputy Marshal Vieter
as N.Y. Police Lt.
as Sgt. Carroll
as Matthew Thomas Cleary
as Clancy
as Stark
as Frank
as Lt. Hallohan(1 ep)
as Guard(1 ep)
as Police Chief(1 ep)
as Lieutenant Dreyer(1 ep)
as Sean Jarvis(1 ep)
as Carl(1 ep)
as Barney(3 eps)
as Sergeant(1 ep)
as Quentin Corbett(1 ep)
as Workman #1(1 ep)
as Assistant Director(1 ep)
as Doorman(1 ep)
as Mounted Sergeant(1 ep)
as 1st Sergeant(1 ep)
as Detective (uncredited)(1 ep)
