2009
Musical Mel: Inventing The Inquisition as Self (archive footage)
2003
Just Married as Father Robert
1997
Wag the Dog as Senator Nole
1997
Police Academy: The Series as Commandant Eric Lassard (1 episode)
1996
The Crucible as Judge Samuel Sewall
1995
Sliders as Old Quinn Mallory (1 episode)
1994
Vanya on 42nd Street as Serybryakov
1994
Chicago Hope as Brook Austin (3 episodes)
1994
Police Academy: Mission to Moscow as Commandant Lassard
1994
The Fantastic Four as Professor
1993
Stepmonster as Norman
1992
Hearts Afire as Senator Strobe Smithers (23 episodes)
1991
Dinosaurs as Elder in Chief (voice) (1 episode)
1989
The New Lassie (1 episode)
1989
Police Academy 6: City Under Siege as Lassard
1988
Police Academy 5: Assignment Miami Beach as Lassard
1987
A Taxi Driver in New York as l'ammiraglio
1987
The Days and Nights of Molly Dodd as Arthur Feldman (17 episodes)
1987
Police Academy 4: Citizens on Patrol as Commandant Lassard
1987
Ternosecco as Don Salvatore
1986
Police Academy 3: Back in Training as Commandant Lassard
1986
Matlock as Judge Hollis D. Dunaway (2 episodes)
1985
It's Punky Brewster (30 episodes)
1985
Police Academy 2: Their First Assignment as Commandant Lassard
1984
Micki + Maude as Dr. Eugene Glztszki
1984
It Came Upon the Midnight Clear as Arch Angel
1984
Mom's On Strike as The Commander
1984
Punky Brewster as Henry Warnimont (91 episodes)
1984
Police Academy as Commandant Lassard
1984
Blue Thunder as Dr. Willi Von Hartig (1 episode)
1983
To Be or Not to Be as Ravitch
1983
I'm Going to Be Famous
1982
Cheers as Malcolm Kramer (1 episode)
1982
Dead Men Don't Wear Plaid as Dr. Forrest
1981
Evita Peron as Evita's Doctor
1980
Altered States as Dr. Wissenschaft
1980
Scruples as John Prince (3 episodes)
1979
Breaking Up Is Hard to Do as Wiley
1979
Stockard Channing: In Just Friends as Rock La Rue (1 episode)
1978
WKRP in Cincinnati as Henri (1 episode)
1977
The Girl in the Empty Grave as David Alden
1977
Carter Country (1 episode)
1976
Nickelodeon as Reginald Kingsley
1976
Quincy, M.E. (2 episodes)
1976
Baa Baa Black Sheep as Claire Lee Chennault (1 episode)
1976
Rich Man, Poor Man - Book II as Max Vincent (5 episodes)
1976
The Flying Misfits as Maj. Gen. Claire Lee Chennault
1976
Delvecchio as Commissioner Schaub (1 episode)
1976
Woman of the Year as Harding
1976
The Quest (1 episode)
1976
City of Angels (1 episode)
1975
Song of the Succubus as C.J. Meredith
1975
Trilogy of Terror as Dr. Chester Ramsey
1974
The Six Million Dollar Man as General Wiley (1 episode)
1973
The Way We Were as El Morocco Captain
1973
Slaughter's Big Rip Off as Warren
1973
The Boy Who Cried Werewolf as Dr Marderosian
1971
McMillan and Wife as Burton Rhoner (1 episode)
1971
Columbo as Everett (1 episode)
1971
Columbo as Frenchman (1 episode)
1971
Doctors' Wives as Paul McGill
1969
Marooned as Mission Director
1968
Hawaii Five-O as Thurman Elliott (1 episode)
1966
Mission: Impossible as Dr. Paul van Bergner (1 episode)
1966
The Group as Brook Latham
1965
Hogan's Heroes (1 episode)
1963
The Patty Duke Show (1 episode)
1962
The Gallant Men (1 episode)
1962
The Alfred Hitchcock Hour as Mr. Campbell (1 episode)
1959
Bonanza as Senator Purdy (1 episode)
1955
Cheyenne as Rod Delaplane (1 episode)
1955
One Touch of Venus as Whitelaw Savory