He was married to Ida Hove and had three children, including actors John Prosky and Andy Prosky.
Prosky died in 2008 at the age of 77 due to complications of heart surgery.
Film Roles
- Zalmen Or The Madness Of God as The Chairman (TV Movie)
- The Brinks Job as Cop in Police Lineup (Uncredited Role)
- Thief as Leo
- Hanky Panky as Hiram Calder
- Monsignor as Bishop Walkman
- The Lords of Discipline as Col. 'Bear' Berrineau
- Christine as Will Darnell
- The Keep as Father Fonescu
- The Natural as The Judge
- Outrageous Fortune as Stanislav Korzenowski
- Big Shots as Keegan
- Broadcast News as Ernie Merriman
- The Great Outdoors as Wally
- Things Change as Joseph 'Don Giuseppe' Vincent
- Loose Cannons as Von Metz
- Gremlins 2: The New Batch as Grandpa Fred
- Funny About Love as E.T.
- Green Card as Bronte's Lawyer
- Age Isnt Everything as Grandpa Irving
- Far and Away as Daniel Christie
- Hoffa as Billy Flynn
- Last Action Hero as Nick
- Rudy as Father Cavanaugh
- Mrs. Doubtfire as Mr. Lundy
- Miracle on 34th Street as Judge Henry Harper
- The Scarlet Letter as Horace Stonehall
- Dead Man Walking as Hilton Barber
- The Chamber as E. Garner Goodman
- Mad City as Lou Potts
- Swing Vote 1999 as Chief Justice (TV Movie)
- Dudley Do-Right as Inspector Fenwick
- D-Tox as McKenzie
- Death to Smoochy as Network Chairman (uncredited)
- Suits on the Loose as Bishop Hollister
- The Skeptic as Father Wymond
Television Roles
- The Adams Chronicles as Benjamin Stoddert (1 episode)
- Lou Grant as Paul Policzinski (1 episode)
- World War III as Gen. Aleksey Rudenski
- Hill Street Blues as Sgt. Stan Jablonski (54 episodes)
- Alfred Hitchcock Presents as Dr. Sutton A. Vogel (1 episode)
- Murder, She Wrote as Bishop Patrick Shea (1 episode)
- The Murder Of Mary Phagan as Tom Watson
- Christine Cromwell as Larry Cerreta (1 episode)
- Coach as Coach 'Jake the Snake' Connelly (2 episodes)
- Cheers as Navy Captain Franklin Howe (1 episode)
- Frasier as T.H. Houghton (1 episode)
- Veronica's Closet as Pat Chase (23 episodes)
- Late Line as Boone LeGarde (1 episode)
- The Practice as Father Patrick Martin (5 episodes)
- Touched by an Angel as Dr. Robert Harrigan (1 episode)
- Once and Again as Herbert Miller (1 episode)
- ER as Wayne Rutley (1 episode)
Theatre Roles
- Moonchildren as Mr. Willis
- The Dybbuk as Rabbi Az Ielke
- A View from the Bridge as Alfieri
- Glengarry Glen Ross as Shelly Levene
- A Walk In The Woods as Andrei Botvinnik
- An American Daughter as Alan Hughes
- Democracy as Herbert Wehner
- Awake And Sing as Jacob
- The Price as Solomon
