cast
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Michael Keaton
Johnny Dangerously
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Joe Piscopo
Vermin
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Marilu Henner
Lil
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Maureen Stapleton
Mom
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Peter Boyle
Dundee
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Griffin Dunne
Tommy
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Glynnis O'Connor
Sally
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Dom DeLuise
The Pope
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Richard Dimitri
Maroni
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Danny DeVito
Burr
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Ron Carey
Pat
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Ray Walston
Vendor
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Dick Butkus
Arthur
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Byron Thames
Young Johnny
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Sudie Bond
Cleaning Lady
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Alan Hale Jr.
Desk Sergeant
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Scott Thomson
Charley
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Carl Gottlieb
Dr. Magnus
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Neal Israel
Dr. Zillman
- Mark Jantzen Dutch
- Hal Riddle Warden
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Mike Bacarella
Vito
- Gary Watkins Manny
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Hank Garrett
Mayor
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Leonard Termo
Tony Scarano
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Troy Slaten
Young Tommy
- Alexander Hertzberg Boy in Suit
- Georg Olden Young Vermin
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Cynthia Szigeti
Mrs. Capone
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Elizabeth Arlen
Girl on Steps
- Doris Grossman Woman
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Richard Warwick
Prisoner
- Mike Finneran Prisoner
- Paul B. Brice Prisoner
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Will Seltzer
Prisoner
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Dick Balduzzi
Prisoner
- Gordon Zimmerman Prisoner
- Katie La Bourdette Blond Girl
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Norman Steinberg
Reporter Duffy
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Frank Slaten
Henchman
- Dean R. Miller Photographer
- Edward C. Short Porter
- Shelley Pogoda Woman
- Jerome Michaels Reporter Diering
- Russell Forte Hood
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Jack Nance
Priest
- Joy Michael Chorus Girl
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Rick Rosenthal
Judge
- Paula Dell Mrs. Zimmer
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Harvey Parry
Policeman
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Jeffrey Weissman
T-Shirt Vendor
- Richard A. Roth Prisoner Rabbi
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Chuck Hicks
Governor
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Bob Eubanks
M.C.
- Claudia Kim Girl
- Trisha Long Female Butler
- Mert Rich Man
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Vincent Schiavelli
Maroni's Building Planner (uncredited)
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Taylor Negron
Delivery Man (uncredited)
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Joe Flaherty
Death Row Inmate (uncredited)
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Hank Robinson
Policeman (uncredited)
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Susan Lanier
Radio Singer (uncredited)
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Frank Sivero
Plumber (uncredited)
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Tom Willett
Theater Patron (uncredited)