| Movie | The Making of 'We All Fall Down' | Himself | 2016-03-07 |
| Series | Unscripted | None | 2016-03-08 |
| Movie | The Captains | Himself | 2011-07-22 |
| Movie | Fallout: New Vegas | Robert Edwin House | 2010-10-19 |
| Movie | Dispatches from Nicaragua | Himself | 2008-02-19 |
| Movie | 10th Annual Prism Awards | Himself | 2006-04-30 |
| Series | Boston Legal | Paul Lewiston | 2004-10-03 |
| Movie | An American Tail: The Treasure of Manhattan Island | Dithering | 2000-02-15 |
| Movie | Geppetto | Prof. Buonragazzo | 2000-05-07 |
| Movie | The Little Mermaid 2: Return to the Sea | Chef Louis | 2000-09-19 |
| Movie | Joseph: King of Dreams | Butler | 2000-11-07 |
| Movie | Batman Forever | Dr. Burton | 1995-06-16 |
| Series | Star Trek: Deep Space Nine | Odo / ... | 1993-01-03 |
| Movie | The Ballad of Little Jo | Streight Hollander | 1993-08-20 |
| Movie | The Little Mermaid | Louis | 1989-11-17 |
| Movie | Police Academy 5: Assignment: Miami Beach | Tony | 1988-03-18 |
| Movie | Emmanuel Lewis: My Very Own Show | Himself | 1987-02-13 |
| Movie | The 40th Annual Tony Awards | Himself - Performer | 1986 |
| Movie | 3:15 | Horner | 1986-01-31 |
| Movie | A Smoky Mountain Christmas | Ned | 1986-12-14 |
| Series | The Super Powers Team: Galactic Guardians | Desaad | 1985-09-11 |
| Movie | The Smurfs Christmas Special | Stranger | 1982-12-13 |
| Series | Benson | Clayton Runnymede Endicott III | 1979-09-13 |
| Movie | Eyes of Laura Mars | Donald Phelps | 1978-08-02 |
| Movie | The TVTV Show | News Editor | 1976-02-12 |
| Movie | The Big Bus | Father Kudos | 1976-10-22 |
| Movie | Brewster McCloud | The Lecturer | 1971-08-18 |
| Movie | The 24th Annual Tony Awards | Himself - Winner: Best Performance by a Featured Actor in a Musical | 1970-04-19 |