2020
'Fail-Safe' and the Cold War as Self (archive footage)2016
The Congressman as Harlan Lantier2014
The Cobbler as Mr. Solomon2014
We'll Never Have Paris as Phillipe2013
Muhammad Ali's Greatest Fight as Hugo Black2011
This Must Be the Place as Cheyenne's Father (voice)2004
Imaginary Witness: Hollywood and the Holocaust as Self2001
Unsung Heroes of Pearl Harbor as Not available2000
Revisiting 'Fail-Safe' as Self (archive footage)1999
The Thomas Crown Affair as John Reynolds (Golf Buddy)1997
Rescuers: Stories of Courage - Two Women as Father Theas (segment "Woman on a Bicycle")1996
Floating Palaces as Self - Narrator (voice)1995
Broken Trust as Lionel Nash1994
Spring Awakening as Captain Von Koster1994
Pointman as Jason1993
The X-Files as Senator Albert Sorenson1993
Frasier as Trevor Ainsley1993
Star Trek: Deep Space Nine as Kovat1993
Blind Spot as Simon1992
Citizen Cohn as Sen. Everett Dirksen1991
Ironclads as John Ericsson1991
The Three Little Pigs as Not available1990
Law & Order as Nathan Fogg1990
Law & Order as Philip Woodleigh1990
Law & Order as Larry Weber1990
Against the Law as Not available1990
Tales from the Darkside as Dr. Fenner1990
Preston Sturges: The Rise and Fall of an American Dreamer as Narrator1989
My Name Is Bill W. as Not available1989
The Spirit of Pittsburgh as Narrator1988
Monsters as Not available1987
Friday the 13th: The Series as Asteroth1987
I'll Take Manhattan as Mr. Amberville1986
L.A. Law as Dr. Aaron Pierce1986
Matlock as Pastor James Hubert1986
Power as Wallace Furman1986
Under Siege as Bernard Hughes1985
The Twilight Zone as (segment "The Star")1985
A Death in California as Van Niven1985
The Hearst and Davies Affair as Arthur Beal1984
Murder, She Wrote as Edwin Dupont1984
Murder, She Wrote as Paris Inspector Hugues Panassié1984
Murder, She Wrote as Judge Lambert1984
Tales from the Darkside as Dr. Fenner1984
Tales from the Darkside as Sir Edmund Halley1984
Hot Pursuit as Not available1983
Alice in Wonderland as Caterpillar1982
Creepshow as Dexter Stanley (segment "The Crate")1982
Jaws of Satan as Pater Tom Farrow1982
Maid in America as Jonas1981
Falcon Crest as Arthur Masefield1981
See China and Die as Poston1980
Magnum, P.I. as Captain J. Cooly1980
The Martian Chronicles as Father Peregrine1980
Nightkill as Herbert Childs1980
Dan August: Once Is Never Enough as Dr. Michael Serling1980
Children of Divorce as Eli Sorenson1979
Tales of the Unexpected as Princey1978
Holocaust as Dr. Josef Weiss1978
The Big Fix as Oscar Procari Sr.1977
The Love Boat as Mr. Weatherby1977
Demon Seed as Alex Harris1977
Black Sunday as FBI Agent Sam Corley1977
Captains Courageous as Harvey Cheyne, Sr.1977
The Return of Wonder Woman as Dr. Solano1976
Quincy, M.E. as Sen. William Pike1976
Marathon Man as Professor Biesenthal1975
Wonder Woman as Dr. Solano1975
The Legend of Lizzie Borden as Mr. Andrew Borden1975
Henry James' The Jolly Corner as Spencer Brydon1974
Petrocelli as Colonel William Fletcher1974
A Touch of the Poet as Cornelius Melody1974
The Book of Murder as Henry1974
Antigone as Creon1973
Barnaby Jones as Laurence Sheffield1973
Barnaby Jones as Jason Matthews1973
The Day of the Dolphin as Harold DeMilo1973
Hunter as Cirrak1973
Shock-A-Bye Baby as Not available1972
The Streets of San Francisco as Ted Whitlock1972
Banyon as Whitney Pemberton1972
Kung Fu as Hillquist1972
The Female Instinct as Anton de Tourolet1972
Heat of Anger as Vincent Kagel1971
Owen Marshall: Counselor at Law as Dr. Martin Cohen1971
Great Performances as Caterpillar1971
Great Performances as Creon1971
Cannon as Not available1970
Dan August as Dr. Michael Serling1970
Night Gallery as Dr. Mazi1970
A Walk in the Spring Rain as Roger Meredith1970
Company of Killers as John Shankalien1970
Berlin Affair as Joe Mallicent1969
Room 222 as Not available1969
The Maltese Bippy as Mischa Ravenswood1968
The Name of the Game as Walter Scharz1968
Hawaii Five-O as Dr. Harvey Danworth1968
The Mod Squad as John Palmer1968
The Outcasts as Not available1967
Mannix as Dr. Cameron McKenzie1967
Mannix as William Avery1967
The Invaders as Deputy Ambassador Peter Borke1967
Ironside as Paul Friedland1967
The Borgia Stick as Anderson1967
The Crucible as Reverend Hale1966
Felony Squad as Not available1966
Mission: Impossible as Imre Rogosh1966
Mission: Impossible as Erik Hagar1966
Mission: Impossible as Emil Skarbeck1966
Mission: Impossible as George Berlinger1966
CBS Playhouse as Not available1965
The F.B.I. as Steven Colton1965
The F.B.I. as John Thomas Whiting1965
The F.B.I. as Paul Winters1965
The F.B.I. as Charles Ridgeway1965
The Big Valley as Burke Jordan1965
The Big Valley as Hebron Grant1964
The Man from U.N.C.L.E. as Andrew Vulcan1964
12 O'Clock High as Col. Peter Raff1964
Fail Safe as Col. Cascio1964
To Trap a Spy as Andrew Vulcan1964
The Guns of August as Narrator (voice)1963
The Fugitive as Joe Tucker1963
The Great Adventure as Colonel Thomas Rose1963
The Power and the Glory as Not available1962
Combat! as Major Chaplain Ernest Miller1961
Dr. Kildare as Arthur Hobler1961
The New Breed as Arthur Grissom1961
The Defenders as Leo Graves1961
The Defenders as Vincent Kayle1961
Cain's Hundred as Martin Weir1961
The Asphalt Jungle as Not available1961
Jane Eyre as Not available1961
Man From a Missing Land as Narrator1959
The Twilight Zone as William Sturka1959
The Twilight Zone as Chancellor1959
Rawhide as Jonathan Damon1959
The Bell Telephone Hour as Self - Narrator1957
DuPont Show of the Month as Charlie Castle1957
DuPont Show of the Month as Barsad1956
Tony Awards as Self - Memoriam (archive footage)1956
Tony Awards as Self - Winner1955
Gunsmoke as Marshal Burl Masters1952
Omnibus as Not available1952
Omnibus as Newspaper Photographer1951
Hallmark Hall of Fame as Dr. Burnham1950
Armstrong Circle Theatre as Milovan Djilas1948
Studio One as George Hanley1948
Studio One as GeorgeNaN
Battles That Doomed Hitler as Narrator (voice)NaN
George Romero's Golden Tales 3 as Not available