| 2021 |
Star Trek: Prodigy
TV
|
Odo (voice) |
| 2020 |
First Cow
MOVIE
|
Man with Raven |
| 2019 |
The Little Mermaid Live!
MOVIE
|
Louis (archive footage) (voice) |
| 2019 |
Windows on the World
MOVIE
|
Maury |
| 2019 |
Raising Buchanan
MOVIE
|
President James Buchanan |
| 2019 |
The Circuit
MOVIE
|
Self |
| 2018 |
What We Left Behind: Looking Back at Star Trek: Deep Space Nine
MOVIE
|
Self |
| 2016 |
Way Out on a Limb
MOVIE
|
Self |
| 2016 |
Way Out on a Limb
MOVIE
|
Self |
| 2016 |
Certain Women
MOVIE
|
Albert |
| 2016 |
Blood Stripe
MOVIE
|
Art |
| 2015 |
This Is Happening
MOVIE
|
Cal Plotz |
| 2014 |
The Librarians
TV
|
Mr. McGuire |
| 2014 |
Madam Secretary
TV
|
Walter Nowack |
| 2014 |
Planes: Fire & Rescue
MOVIE
|
Concierge (voice) |
| 2013 |
Evermore
MOVIE
|
Grandpa |
| 2013 |
Masters of Sex
TV
|
Dr. George Papanikolaou |
| 2013 |
Wander Over Yonder
TV
|
Maurice (voice) |
| 2013 |
The Sixth Gun
MOVIE
|
Von Allen / Montcrief |
| 2013 |
The Captains Close Up
TV
|
Self |
| 2012 |
1600 Penn
TV
|
Winslow Hannum |
| 2012 |
Ben 10: Omniverse
TV
|
Azmuth (voice) |
| 2012 |
Get a Life!
MOVIE
|
Himself |
| 2011 |
The Captains
MOVIE
|
Self |
| 2011 |
The Looney Tunes Show
TV
|
Pepé Le Pew (voice) |
| 2010 |
Young Justice
TV
|
Mark Desmond (voice) |
| 2010 |
The Making of Fallout: New Vegas
MOVIE
|
Self |
| 2010 |
Pound Puppies
TV
|
McLeish (voice) |
| 2010 |
BlackBoxTV Presents
TV
|
Rudy |
| 2009 |
The Good Wife
TV
|
Coroner Claypool |
| 2009 |
Archer
TV
|
Mannfred (voice) |
| 2009 |
Archer
TV
|
Cardinal Giancarlo Morelli (voice) |
| 2009 |
Warehouse 13
TV
|
Hugo Miller |
| 2009 |
Le Door
MOVIE
|
Le Door |
| 2008 |
Hornswiggle
MOVIE
|
Hornswiggle (voice) |
| 2008 |
Random! Cartoons
TV
|
Hornswiggle / Apeman #2 (voice) |
| 2008 |
Dispatches from Nicaragua
MOVIE
|
Self |
| 2007 |
Chill Out, Scooby-Doo!
MOVIE
|
Alphonse LaFleur (voice) |
| 2007 |
Saving Grace
TV
|
Father Patrick Murphy |
| 2007 |
Andrew Jackson: Good, Evil & The Presidency
MOVIE
|
James Parton (voice) |
| 2007 |
Scooby-Doo: Agence toutou risques, vol. 1 : Le voleur de vélo
MOVIE
|
(voice) |
| 2007 |
Scooby-Doo: Agence toutou risques, vol. 2 : Le fantôme de la télé
MOVIE
|
(voice) |
| 2005 |
Criminal Minds
TV
|
Colonel Ron Massey |
| 2005 |
It's Always Sunny in Philadelphia
TV
|
Dr. Larry Meyers |
| 2005 |
Stewie Griffin: The Untold Story
MOVIE
|
Odo (voice) |
| 2005 |
Grey's Anatomy
TV
|
Neil Sheridan |
| 2005 |
Avatar: The Last Airbender
TV
|
Mechanist (voice) |
| 2005 |
Avatar: The Last Airbender
TV
|
Gan Jin Leader (voice) |
| 2005 |
Geppetto's Secret
MOVIE
|
Mr. Sneap |
| 2004 |
Eulogy
MOVIE
|
Parson Banke |
| 2004 |
Boston Legal
TV
|
Paul Lewiston |
| 2003 |
Xiaolin Showdown
TV
|
Master Fung (voice) |
| 2003 |
NCIS
TV
|
Dr. Felix Blackwell |
| 2003 |
Duck Dodgers
TV
|
McChirpy (voice) |
| 2003 |
Trials and Tribble-ations: Uniting Two Legends
MOVIE
|
Himself |
| 2002 |
Dan Dare: Pilot of the Future
TV
|
Kuffka (voice) |
| 2002 |
Tarzan & Jane
MOVIE
|
(voice) |
| 2002 |
Witness to Hope: The Life of Karol Wojtyla, Pope John Paul II
MOVIE
|
Narrator (voice) |
| 2002 |
Woodrow Wilson
MOVIE
|
Self - voice |
| 2001 |
Justice League
TV
|
Kanjar-Ro / Galius Zed / Guardian of Oa (voice) |
| 2001 |
Justice League
TV
|
Desaad / General Steppenwolf / Minion (voice) |
| 2001 |
Justice League
TV
|
Galius Zed / Kalanorian (voice) |
| 2001 |
Star Trek: Enterprise
TV
|
Ezral |
| 2001 |
The Legend of Tarzan
TV
|
Renard Dumont (voice) |
| 2001 |
The Princess Diaries
MOVIE
|
Philippe Renaldi (uncredited) |
| 2001 |
Burning Down the House
MOVIE
|
Pierre |
| 2001 |
Disney's House of Mouse
TV
|
Self |
| 2000 |
Joseph: King of Dreams
MOVIE
|
Butler (voice) |
| 2000 |
The Patriot
MOVIE
|
Reverend Oliver |
| 2000 |
The Secret Adventures of Jules Verne
TV
|
Self |
| 2000 |
Geppetto
MOVIE
|
Prof Buonragazzo |
| 2000 |
Sally Hemings: An American Scandal
MOVIE
|
James Callender |
| 2000 |
Sally Hemings: An American Scandal
TV
|
James Callender |
| 2000 |
The Little Mermaid II: Return to the Sea
MOVIE
|
Chef Louis (voice) |
| 2000 |
Enlisted: The Story of 'M*A*S*H'
MOVIE
|
Self |
| 2000 |
Altman on His Own Terms
MOVIE
|
Self |
| 1999 |
Xyber 9: New Dawn
TV
|
Xyber 9 (voice) |
| 1999 |
We All Fall Down
MOVIE
|
Tim |
| 1999 |
Judging Amy
TV
|
Judge Jackson Keeler |
| 1999 |
Inspector Gadget
MOVIE
|
Artemus Bradford |
| 1999 |
Family Guy
TV
|
Odo (voice) |
| 1998 |
The Wild Thornberrys
TV
|
Merrick Dash (voice) |
| 1998 |
An American Tail: The Treasure of Manhattan Island
MOVIE
|
Dithering (voice) |
| 1997 |
Extreme Ghostbusters
TV
|
Self |
| 1997 |
Stargate SG-1
TV
|
Alar |
| 1997 |
Snide and Prejudice
MOVIE
|
Dr. Sam Cohen |
| 1997 |
Cats Don't Dance
MOVIE
|
Flanigan (voice) |
| 1997 |
The Practice
TV
|
Judge F. Mantz |
| 1997 |
Los Locos
MOVIE
|
Presidente |
| 1996 |
The Great War and the Shaping of the 20th Century
TV
|
Jean Jaures / Mustafa Kemal Ataturk (voice) |
| 1996 |
The Making of Star Trek Deep Space Nine Trials And Tribble-ations
MOVIE
|
Self |
| 1996 |
Star Trek: 30 Years and Beyond
MOVIE
|
Self |
| 1996 |
Bruno the Kid
TV
|
Leonardo Linguini (voice) |
| 1996 |
Richie Rich
TV
|
Richard Rich, Chef Pierre, Professor Keenbean |
| 1996 |
Captain Simian & the Space Monkeys
TV
|
Gardener / Alien Gladioluses (voice) |
| 1996 |
Nash Bridges
TV
|
Hagen Bridges |
| 1995 |
The Savage Dragon
TV
|
Horde (voice) |
| 1995 |
Star Trek: Deep Space Nine - The Way of the Warrior
MOVIE
|
Odo |
| 1995 |
Batman Forever
MOVIE
|
Dr. Burton |
| 1995 |
The Outer Limits
TV
|
Dlavan |
| 1994 |
Chicago Hope
TV
|
Walter Kerry |
| 1994 |
Aladdin
TV
|
Nefir Hasenuf (voice) |
| 1993 |
Marsupilami
TV
|
Chef Louie (voice) |
| 1993 |
Frasier
TV
|
William Tewksbury |
| 1993 |
The Ballad of Little Jo
MOVIE
|
Streight Hollander |
| 1993 |
Star Trek: Deep Space Nine - Behind the Scenes
MOVIE
|
Himself |
| 1993 |
Star Trek: Deep Space Nine
TV
|
Odo |
| 1992 |
The Sands of Time
MOVIE
|
Prime Minister |
| 1992 |
Raw Toonage
TV
|
Chef Louie (voice) |
| 1992 |
Batman: The Animated Series
TV
|
Dr. March (voice) |
| 1992 |
Wild Card
MOVIE
|
Jake Spence |
| 1992 |
The Player
MOVIE
|
René Auberjonois |
| 1992 |
Ned Blessing: The True Story Of My Life
MOVIE
|
Marquis |
| 1992 |
Lucky Luke
TV
|
Mr. Edgar Rockbottom / Mendez |
| 1992 |
The Lost Language of Cranes
MOVIE
|
Geoffrey Lane |
| 1991 |
Star Trek VI: The Undiscovered Country
MOVIE
|
Colonel West (uncredited) |
| 1991 |
Timeless Tales from Hallmark: Puss in Boots
MOVIE
|
voice |
| 1991 |
Eerie, Indiana
TV
|
The Donald |
| 1991 |
Absolute Strangers
MOVIE
|
Quinn |
| 1990 |
Tom & Jerry Kids Show
TV
|
Pierre (voice) |
| 1989 |
A Connecticut Yankee in King Arthur's Court
MOVIE
|
Merlin |
| 1989 |
The Little Mermaid
MOVIE
|
Louis (voice) |
| 1989 |
The Feud
MOVIE
|
Reverton |
| 1989 |
Doogie Howser, M.D.
TV
|
Self |
| 1988 |
American Experience
TV
|
Alexander Hamilton (voice) |
| 1988 |
American Experience
TV
|
Woodrow Wilson (voice) |
| 1988 |
Superman
TV
|
General Zod (voice) |
| 1988 |
Police Academy 5: Assignment Miami Beach
MOVIE
|
Tony |
| 1988 |
Longarm
MOVIE
|
Gov. Lew Wallace |
| 1987 |
Walker
MOVIE
|
Maj. Siegfried Hennington |
| 1987 |
My Best Friend Is a Vampire
MOVIE
|
Modoc |
| 1987 |
DuckTales
TV
|
Dr. Nogood (voice) |
| 1986 |
The Christmas Star
MOVIE
|
Sumner |
| 1986 |
A Smoky Mountain Christmas
MOVIE
|
Ned |
| 1986 |
L.A. Law
TV
|
Kevin Richardson |
| 1986 |
Wildfire
TV
|
Self |
| 1986 |
Matlock
TV
|
Leo Brodsky |
| 1986 |
Matlock
TV
|
Doug Michaels |
| 1986 |
3:15 the Moment of Truth
MOVIE
|
Horner |
| 1986 |
Blacke's Magic
TV
|
Self |
| 1985 |
The Super Powers Team: Galactic Guardians
TV
|
Desaad (voice) |
| 1984 |
Challenge of the GoBots
TV
|
Self |
| 1984 |
Murder, She Wrote
TV
|
Prof. Harry Papasian |
| 1984 |
Murder, She Wrote
TV
|
Homicide Captain Walker Thorn |
| 1984 |
Snorks
TV
|
Dr. Strangesnork |
| 1983 |
Sleeping Beauty
MOVIE
|
King Boris |
| 1982 |
The Smurfs Christmas Special
MOVIE
|
Stranger (voice) |
| 1982 |
The Last Unicorn
MOVIE
|
The Skull (voice) |
| 1982 |
The Tale of the Frog Prince
MOVIE
|
King Ulrich |
| 1982 |
Faerie Tale Theatre
TV
|
King Boris |
| 1982 |
Faerie Tale Theatre
TV
|
King Ulrich |
| 1982 |
The Kid From Nowhere
MOVIE
|
Howard |
| 1980 |
More Wild Wild West
MOVIE
|
Capt. Sir David Edney |
| 1980 |
Where the Buffalo Roam
MOVIE
|
Harris |
| 1980 |
Beyond Westworld
TV
|
Power |
| 1980 |
Tenspeed and Brown Shoe
TV
|
Self |
| 1979 |
Once Upon a Midnight Scary
MOVIE
|
Ichabod Crane |
| 1979 |
Hart to Hart
TV
|
Springfield |
| 1979 |
Benson
TV
|
Clayton Endicott III |
| 1979 |
The Wild Wild West Revisited
MOVIE
|
Capt. Sir David Edney |
| 1979 |
Just Friends
TV
|
Self |
| 1979 |
Mrs. Columbo
TV
|
Self |
| 1979 |
Mrs. Columbo
TV
|
Monsieur Gerard |
| 1978 |
Eyes of Laura Mars
MOVIE
|
Donald Phelps |
| 1978 |
The Dark Secret of Harvest Home
TV
|
Jack Stump |
| 1977 |
Man from Atlantis
TV
|
Havergal |
| 1977 |
The Rhinemann Exchange
TV
|
Dr. Eugene Lyons |
| 1976 |
Charlie's Angels
TV
|
Terrence |
| 1976 |
Charlie's Angels
TV
|
Freddie Fortune |
| 1976 |
Baa Baa Black Sheep
TV
|
Matthew Hooper |
| 1976 |
King Kong
MOVIE
|
Roy Bagley |
| 1976 |
The Big Bus
MOVIE
|
Father Kudos |
| 1976 |
Panache
MOVIE
|
Panache |
| 1976 |
The Bionic Woman
TV
|
Self |
| 1975 |
The Hindenburg
MOVIE
|
Major Napier |
| 1975 |
Upcoming Season
MOVIE
|
Roberts |
| 1975 |
Wonder Woman
TV
|
Kimball |
| 1975 |
Saturday Night Live
TV
|
Roberts (uncredited) |
| 1975 |
Ellery Queen
TV
|
Marcel Fourchet |
| 1975 |
Starsky & Hutch
TV
|
Self |
| 1975 |
The Jeffersons
TV
|
Self |
| 1974 |
The Lives of Benjamin Franklin
TV
|
Self |
| 1974 |
The Rockford Files
TV
|
Masters |
| 1974 |
Harry O
TV
|
Self |
| 1974 |
Rhoda
TV
|
Self |
| 1974 |
King Lear
MOVIE
|
Edgar |
| 1973 |
Incident at Vichy
MOVIE
|
Monceau, An Actor |
| 1973 |
The Birdmen
MOVIE
|
Halden Brevik / Olav Volda |
| 1973 |
Shirts/Skins
MOVIE
|
Sidney Krebs |
| 1973 |
Super Friends
TV
|
Desaad (voice) |
| 1972 |
Images
MOVIE
|
Hugh |
| 1972 |
Pete 'n' Tillie
MOVIE
|
Jimmy Twitchell |
| 1972 |
The Rookies
TV
|
Self |
| 1971 |
Once Upon a Dead Man
MOVIE
|
Andre Stryker |
| 1971 |
Brewster McCloud
MOVIE
|
The Lecturer |
| 1971 |
McCabe & Mrs. Miller
MOVIE
|
Sheehan |
| 1971 |
Great Performances
TV
|
Edgar |
| 1971 |
Teenage Tease
MOVIE
|
Self |
| 1970 |
Night Gallery
TV
|
Self |
| 1970 |
M*A*S*H
MOVIE
|
Father John Mulcahy |
| 1968 |
The Mod Squad
TV
|
Self |
| 1968 |
Petulia
MOVIE
|
Fred Six (uncredited) |
| 1964 |
Lilith
MOVIE
|
Howie (uncredited) |
| 1962 |
The Jetsons
TV
|
(voice) |
| 1956 |
Tony Awards
TV
|
Self - Nominee |
|
Cortex
MOVIE
|
Parks |