 | First Cow (2020)
Man with Raven |
 | Windows on the World (2019)
Maury |
 | Raising Buchanan (2019)
President James Buchanan |
 | The Circuit (2019)
|
 | What We Left Behind: Looking Back at Star Trek: Deep Space Nine (2018)
Self |
 | Way Out on a Limb (2016)
Self |
 | Certain Women (2016)
Albert |
 | Blood Stripe (2016)
Art |
 | This Is Happening (2015)
Cal Plotz |
 | Planes: Fire & Rescue (2014)
Concierge (voice) |
 | Evermore (2013)
Grandpa |
 | The Sixth Gun (2013)
Von Allen / Montcrief |
 | Get a Life! (2012)
Himself |
 | The Captains (2011)
Self |
 | Le Door (2009)
Le Door |
 | Hornswiggle (2008)
Hornswiggle (voice) |
 | Dispatches from Nicaragua (2008)
|
 | Chill Out, Scooby-Doo! (2007)
Alphonse LaFleur (voice) |
 | Andrew Jackson: Good, Evil & The Presidency (2007)
James Parton (voice) |
 | Scooby-Doo: Agence toutou risques, vol. 2 : Le fantôme de la télé (2007)
(voice) |
 | Scooby-Doo: Agence toutou risques, vol. 1 : Le voleur de vélo (2007)
(voice) |
 | Family Guy Presents: Stewie Griffin: The Untold Story (2005)
Odo (voice) |
| | Geppetto's Secret (2005)
Mr. Sneap |
 | Eulogy (2004)
Parson Banke |
 | Trials and Tribble-ations: Uniting Two Legends (2003)
Himself |
 | Tarzan & Jane (2002)
(voice) |
 | Witness to Hope: The Life of Karol Wojtyla, Pope John Paul II (2002)
Narrator (voice) |
 | Woodrow Wilson (2002)
voice |
 | The Princess Diaries (2001)
Philippe Renaldi (uncredited) |
| | Burning Down the House (2001)
Pierre |
 | Joseph: King of Dreams (2000)
Butler (voice) |
 | The Patriot (2000)
Reverend Oliver |
 | Geppetto (2000)
Prof Buonragazzo |
 | Sally Hemings: An American Scandal (2000)
James Callender |
 | The Little Mermaid II: Return to the Sea (2000)
Chef Louis (voice) |
| | Enlisted: The Story of 'M*A*S*H' (2000)
Self |
 | We All Fall Down (1999)
Tim |
 | Inspector Gadget (1999)
Artemus Bradford |
 | An American Tail: The Treasure of Manhattan Island (1998)
Dithering (voice) |
 | Snide and Prejudice (1997)
Dr. Sam Cohen |
 | Cats Don't Dance (1997)
Flanigan (voice) |
 | Los Locos (1997)
Presidente |
| | The Making of Star Trek Deep Space Nine Trials And Tribble-ations (1996)
Self |
 | Star Trek: Deep Space Nine - The Way of the Warrior (1995)
Odo |
 | Batman Forever (1995)
Dr. Burton |
 | The Ballad of Little Jo (1993)
Streight Hollander |
 | Star Trek: Deep Space Nine - Behind the Scenes (1993)
Himself |
 | Star Trek: Deep Space Nine - Emissary (1993)
Odo |
 | The Sands of Time (1992)
Prime Minister |
 | Wild Card (1992)
Jake Spence |
 | Ned Blessing: The True Story Of My Life (1992)
Marquis |
 | The Player (1992)
René Auberjonois |
 | The Lost Language of Cranes (1992)
Geoffrey Lane |
 | Absolute Strangers (1991)
Quinn |
 | A Connecticut Yankee in King Arthur's Court (1989)
Merlin |
 | The Little Mermaid (1989)
Louis (voice) |
 | The Feud (1989)
Reverton |
 | リトル・ニモ (1989)
Professor Genius (voice) |
 | Police Academy 5: Assignment Miami Beach (1988)
Tony |
 | Longarm (1988)
Gov. Lew Wallace |
 | Walker (1987)
Maj. Siegfried Hennington |
 | My Best Friend Is a Vampire (1987)
Modoc |
 | The Christmas Star (1986)
Sumner |
 | A Smoky Mountain Christmas (1986)
Ned |
 | 3:15 the Moment of Truth (1986)
Horner |
 | Sleeping Beauty (1983)
King Boris |
 | The Smurfs Christmas Special (1982)
Stranger (voice) |
 | The Last Unicorn (1982)
The Skull (voice) |
 | The Tale of the Frog Prince (1982)
King Ulrich |
 | The Kid From Nowhere (1982)
Howard |
 | More Wild Wild West (1980)
Capt. Sir David Edney |
 | Where the Buffalo Roam (1980)
Harris |
 | Once Upon a Midnight Scary (1979)
Ichabod Crane |
 | The Wild Wild West Revisited (1979)
Capt. Sir David Edney |
 | Eyes of Laura Mars (1978)
Donald Phelps |
 | King Kong (1976)
Roy Bagley |
 | The Big Bus (1976)
Father Kudos |
 | Panache (1976)
Panache |
 | The Hindenburg (1975)
Major Napier |
 | Upcoming Season (1975)
Roberts |
 | King Lear (1974)
Edgar |
 | Incident at Vichy (1973)
Monceau, An Actor |
 | The Birdmen (1973)
Halden Brevik / Olav Volda |
 | Shirts/Skins (1973)
Sidney Krebs |
 | Images (1972)
Hugh |
 | Pete 'n' Tillie (1972)
Jimmy Twitchell |
 | Once Upon a Dead Man (1971)
Andre Stryker |
 | McCabe & Mrs. Miller (1971)
Sheehan |
 | Teenage Tease (1971)
|
 | Brewster McCloud (1970)
The Lecturer |
 | M*A*S*H (1970)
Father John Mulcahy |
 | Petulia (1968)
Fred Six (uncredited) |
 | Lilith (1964)
Howie (uncredited) |
| | Cortex
Parks |
