(1973) The Way We Were

as El Morocco Captain

(1994) The Fantastic Four

as Professor

(1994) Police Academy: Mission to Moscow

as Commandant Lassard

(1983) To Be or Not to Be

as Ravitch

(1982) Dead Men Don't Wear Plaid

as Dr. Forrest

(1994) Vanya on 42nd Street

as Serybryakov

(1982) Tootsie

as John Van Horn

(1984) Police Academy

as Commandant Lassard

(1984) Micki + Maude

as Dr. Eugene Glztszki

(1997) Wag the Dog

as Senator Nole

(2009) Musical Mel: Inventing The Inquisition

as Self (archive footage)

(1964) Joy House

as ---

(1975) Trilogy of Terror

as Dr. Chester Ramsey

(1984) It Came Upon the Midnight Clear

as Arch Angel

(1987) A Taxi Driver in New York

as l'ammiraglio

(1976) Nickelodeon

as Reginald Kingsley

(1971) Doctors' Wives

as Paul McGill

(1987) Ternosecco

as Don Salvatore

(1984) Mom's On Strike

as The Commander

(1985) Police Academy 2: Their First Assignment

as Commandant Lassard

(1986) Police Academy 3: Back in Training

as Commandant Lassard

(1987) Police Academy 4: Citizens on Patrol

as Commandant Lassard

(1988) Police Academy 5: Assignment Miami Beach

as Lassard

(1989) Police Academy 6: City Under Siege

as Lassard

(1976) Woman of the Year

as Harding

(1976) The Flying Misfits

as Maj. Gen. Claire Lee Chennault

(1993) Stepmonster

as Norman

(1977) The Girl in the Empty Grave

as David Alden

(1979) Breaking Up Is Hard to Do

as Wiley

(1981) Evita Peron

as Evita's Doctor

(1969) Marooned

as Mission Director

(1973) Slaughter's Big Rip Off

as Warren

(1980) Altered States

as Dr. Wissenschaft

(1983) I'm Going to Be Famous

as ---

(1973) The Boy Who Cried Werewolf

as Dr Marderosian

(1955) One Touch of Venus

as Whitelaw Savory

(2003) Just Married

as Father Robert

(1996) The Crucible

as Judge Samuel Sewall

(1975) Song of the Succubus

as C.J. Meredith

(1966) The Group

as Brook Latham

(1971) Columbo

as Everett

(1962) The Gallant Men

as ---

(1978) WKRP in Cincinnati

as Henri

(1986) Matlock

as Judge Hollis D. Dunaway

(1968) Hawaii Five-O

as Thurman Elliott

(1976) Quincy, M.E.

as ---

(1992) Hearts Afire

as Senator Strobe Smithers

(1982) Hotel

as ---

(1965) Hogan's Heroes

as ---

(1971) Cannon

as ---

(1994) Chicago Hope

as Brook Austin

(1985) It's Punky Brewster

as ---

(1976) The Quest

as ---

(1977) Carter Country

as ---

(1972) Search

as ---

(1970) McCloud

as ---

(1976) City of Angels

as ---

(1989) The New Lassie

as ---

(1963) The Patty Duke Show

as ---

(1984) Blue Thunder

as Dr. Willi Von Hartig

(1979) Stockard Channing: In Just Friends

as Rock La Rue

(1984) Punky Brewster

as Henry Warnimont

(1997) Police Academy: The Series

as Commandant Eric Lassard

(1959) Bonanza

as Senator Purdy

(1966) Mission: Impossible

as Dr. Paul van Bergner

(1974) The Six Million Dollar Man

as General Wiley

(1976) Rich Man, Poor Man - Book II

as Max Vincent

(1976) Baa Baa Black Sheep

as Claire Lee Chennault

(1980) Scruples

as John Prince

(1955) Cheyenne

as Rod Delaplane

(1971) McMillan & Wife

as Burton Rhoner

(1991) Dinosaurs

as Elder in Chief (voice)

(1995) Sliders

as Old Quinn Mallory

(1987) The Days and Nights of Molly Dodd

as Arthur Feldman

(1976) Delvecchio

as Commissioner Schaub

(1982) Cheers

as Malcolm Kramer

(1971) Columbo

as Frenchman

(1962) The Alfred Hitchcock Hour

as Mr. Campbell

(1967) Mannix

as Professor Brendan