Filmography
| Year | Title | Role |
| 1994 | Across the Moon | Barney |
| 1994 | Camp Nowhere | Fein |
| 1993 | Grumpy Old Men | Grandpa Gustafson |
| 1990 | State of Grace (1990) | Finn |
| 1990 | Rocky V (1990) | Mickey Goldmill |
| 1987 | King Lear (1987) | Don Learo (uncredited) |
| 1987 | TRANSFORMERS: THE MOVIE / G.I. JOE: THE MOVIE | Golobulus |
| 1985 | Santa Claus | Ancient Elf |
| 1984 | Wet Gold | Sampson |
| 1982 | Rocky III | Mickey Goldmill |
| 1981 | Clash of the Titans (2010) | Ammon |
| 1981 | True Confessions | Seamus Fargo |
| 1980 | When Time Ran Out | Rene Valdez |
| 1979 | Rocky II | Mickey Goldmill |
| 1978 | Foul Play | Mr. Hennessey |
| 1978 | The Manitou | Dr. Snow |
| 1978 | The Amazing Captain Nemo | Prof. Waldo Cunningham |
| 1978 | Magic | Ben Greene |
| 1977 | The Great Bank Hoax | Jack Stutz |
| 1977 | The Sentinel | Charles Chazen |
| 1977 | Johnny We Hardly Knew Ye | John F. 'Honey Fitz' Fitzgerald |
| 1977 | Tail Gunner Joe | Joseph Welch |
| 1976 | Rocky | Mickey |
| 1976 | Burnt Offerings | Arnold Allardyce |
| 1975 | The Day of the Locust | Harry Greener |
| 1975 | The Hindenburg | Emilio Pajetta |
| 1975 | 92 in the Shade | Goldsboro |
| 1972 | The Yin and Yang of Mr. Go | The Dolphin |
| 1971 | Such Good Friends / Portnoy's Complaint | Bernard Kalman |
| 1970 | There Was a Crooked Man | The Missouri Kid |
| 1967 | Torture Garden | Dr. Diabolo |
| 1967 | Hurry Sundown | Judge Purcell |
| 1966 | Batman (1966) | Penguin |
| 1966 | Madame X | Dan Sullivan |
| 1966 | A Big Hand for the Little Lady | Doc Scully |
| 1962 | Advise and Consent | Herbert Gelman |
| 1949 | The Man on the Eiffel Tower | Joseph Heurtin |
| 1946 | Diary of a Chambermaid (1946) | Captain Mauger |
| 1946 | Magnificent Doll | James Madison |
| 1945 | The Story of G.I. Joe | Ernie Pyle |
| 1944 | Our Country | Self |
| 1942 | Street of Chance | Frank Thompson/Danny Nearing |
| 1941 | The Forgotten Village | Narrator |
| 1941 | Tom, Dick, and Harry | Harry |
| 1941 | That Uncertain Feeling | Alexander Sebastian |
| 1940 | Castle on the Hudson | Steve Rockford |
| 1940 | Second Chorus | Hank Taylor |
| 1939 | Of Mice and Men (1939) | George |
| 1936 | Winterset | Mio Romagna |
