Filmography
| Year | Title | Role |
| 2011 | Star Whackers | Self |
| 2009 | Balls Out: The Gary Houseman Story | Coach Lew Tuttle |
| 2008 | Real Time | Reuben |
| 2006 | Goya's Ghosts | King Carlos IV |
| 2005 | The Ice Harvest | Bill Guerrard |
| 2005 | Brokeback Mountain: 20th Anniversary (2025) | Joe Aguirre |
| 2004 | Home on the Range | Alameda Slim |
| 2003 | Black Cadillac | Charlie |
| 2003 | Grind | Jock Jensen |
| 2003 | Kart Racer | Vic Davies |
| 2003 | Milwaukee, Minnesota | Jerry James |
| 2002 | Frank McKlusky, C.I. | Madman McKlusky |
| 2002 | The Adventures of Pluto Nash | Bruno |
| 2001 | Not Another Teen Movie | Mr. Briggs |
| 2000 | The Adventures of Rocky and Bullwinkle | Cappy Von Trapment |
| 2000 | George Wallace: Settin' the Woods on Fire | Narrator |
| 1999 | Bug Buster | General George S. Merlin |
| 1998 | Hard Rain | Sheriff |
| 1997 | Vegas Vacation | Cousin Eddie |
| 1997 | Water War | Lenny |
| 1996 | Independence Day (1996) | Russell Casse |
| 1996 | Kingpin | Ishmael Boorg |
| 1994 | The Paper | Michael McDougal |
| 1994 | Major League II | Johnny (uncredited) |
| 1993 | Freaked | Elijah C. Skuggs |
| 1993 | Murder in the Heartland | Elmer Scheele |
| 1990 | Days of Thunder | Tim Daland |
| 1990 | Quick Change | Loomis |
| 1990 | Texasville | Lester Marlow |
| 1989 | National Lampoon's Christmas Vacation | Cousin Eddie Johnson |
| 1987 | LBJ: The Early Years | Lyndon Baines Johnson |
| 1986 | The Wraith (1986) | Sheriff Loomis |
| 1985 | Fool for Love | Martin |
| 1985 | The Slugger's Wife | Moose Granger |
| 1984 | A Streetcar Named Desire (1984) | Harold `'Mitch'` Mitchell |
| 1983 | National Lampoon's Vacation | Cousin Eddie |
| 1981 | Heartbeeps | Charlie |
| 1980 | The Long Riders | Clell Miller |
| 1980 | Foxes | Jay |
| 1978 | Midnight Express | Jimmy Booth |
| 1977 | The Choirboys | Dean Proust |
| 1976 | Bound for Glory (1976) | Luther Johnson |
| 1976 | The Missouri Breaks | Little Tod |
| 1975 | Breakout | Hawk Hawkins |
| 1974 | The Apprenticeship of Duddy Kravitz | Virgil |
| 1973 | The Last Detail | Larry Meadows |
| 1972 | What's Up, Doc? | Professor Hosquith |
| 1971 | The Last Picture Show | Lester Marlow |
