Filmography
| Year | Title | Role |
| 2015 | Blackway | Whizzer |
| 2014 | Planes: Fire & Rescue | Mayday |
| 2013 | Savannah | Judge Harden |
| 2012 | Lincoln | Francis Preston Blair |
| 2012 | Promised Land | Frank Yates |
| 2011 | Water for Elephants | Old Jacob |
| 2011 | Good Day for It | Hec |
| 2010 | Flying Lessons | Harry Pleasant |
| 2009 | That Evening Sun | Abner Meecham |
| 2007 | Into the Wild (2007) | Ron Franz |
| 2003 | Shade | The Professor |
| 2001 | The Majestic | Congressman Doyle |
| 2000 | Men of Honor | Mr. Pappy |
| 2000 | Waking The Dead | Isaac Green |
| 1999 | The Bachelor | Roy O'Dell |
| 1999 | The Florentine | Smitty |
| 1998 | My Own Country | Lloyd Flanders |
| 1997 | Hercules (1997) | Amphitryon; Hercules Foster Father |
| 1995 | Stormchasers | Narrator |
| 1990 | A Killing in a Small Town | Dr. Beardsley |
| 1989 | Sorry, Wrong Number (1989) | Jim Coltrane |
| 1989 | Fletch Lives (1989) | Hamilton "Ham" Johnson |
| 1987 | Wall Street | Lou Mannheim |
| 1986 | Dress Gray | Gen. Charles Hedges |
| 1982 | Creepshow | Henry Northrup (segment "The Crate") |
| 1982 | Girls Nite Out | Jim MacVey |
| 1980 | The Fog | Father Malone |
| 1980 | Off the Minnesota Strip | Bud Johansen |
| 1979 | When Hell Was in Session | Cmdr. Jeremiah A. Denton |
| 1978 | Rituals | Harry |
| 1978 | The Awakening Land | Actor |
| 1978 | Capricorn One | Dr. James Kelloway |
| 1977 | Julia (1977) | Alan |
| 1976 | All the President's Men | Deep Throat |
| 1976 | Midway (1976) | Commander Joseph Rochefort |
| 1973 | Magnum Force | Lt. Neil Briggs |
| 1972 | That Certain Summer | Doug Salter |
| 1970 | A Clear and Present Danger | Senator Hays Stowe |
| 1970 | The Great White Hope | Al Cameron |
| 1970 | The People Next Door | David Hoffman |
| 1969 | The Whole World Is Watching | Chancellor Graham |
| 1968 | Wild in the Streets | Sen. Johnny Fergus |
| 1966 | The Group | Gus Leroy |
