Credits

• 2020 · 'Fail-Safe' and the Cold War as Self (archive footage)
• 2014 · We'll Never Have Paris as Phillipe
• 2014 · The Cobbler as Mr. Solomon
• 2013 · Muhammad Ali's Greatest Fight as Hugo Black
• 2011 · This Must Be the Place as Cheyenne's Father (voice)
• 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 Nash
• 1994 · Pointman as Jason
• 1993 · Frasier as Trevor Ainsley
• 1993 · The X-Files as Senator Albert Sorenson
• 1993 · Star Trek: Deep Space Nine as Kovat
• 1992 · Citizen Cohn as Sen. Everett Dirksen
• 1991 · Ironclads as John Ericsson
• 1991 · The Three Little Pigs as
• 1990 · Tales from the Darkside as Dr. Fenner
• 1990 · Against the Law as
• 1990 · Law & Order as Nathan Fogg
• 1990 · Law & Order as Philip Woodleigh
• 1990 · Law & Order as Larry Weber
• 1989 · My Name Is Bill W. as
• 1988 · Monsters as Mr. Hallet
• 1987 · Friday the 13th: The Series as Asteroth
• 1987 · I'll Take Manhattan as Mr. Amberville
• 1986 · L.A. Law as Dr. Aaron Pierce
• 1986 · Matlock as Pastor James Hubert
• 1986 · Under Siege as Bernard Hughes
• 1986 · Power as Wallace Furman
• 1985 · The Twilight Zone as (segment "The Star")
• 1985 · A Death in California as Van Niven
• 1984 · Murder, She Wrote as Edwin Dupont
• 1984 · Murder, She Wrote as Paris Inspector Hugues Panassié
• 1984 · Murder, She Wrote as Judge Lambert
• 1984 · Tales from the Darkside as Dr. Fenner
• 1984 · Tales from the Darkside as Sir Edmund Halley
• 1984 · Hot Pursuit as
• 1982 · Creepshow as Dexter Stanley (segment "The Crate")
• 1982 · Jaws of Satan as Pater Tom Farrow
• 1981 · Falcon Crest as Arthur Masefield
• 1981 · See China and Die as Poston
• 1980 · Magnum, P.I. as Captain J. Cooly
• 1980 · The Martian Chronicles as Father Peregrine
• 1979 · Tales of the Unexpected as Princey
• 1978 · The Big Fix as Oscar Procari Sr.
• 1978 · Holocaust as Dr. Josef Weiss
• 1977 · The Love Boat as Mr. Weatherby
• 1977 · Demon Seed as Alex Harris
• 1977 · Black Sunday as FBI Agent Sam Corley
• 1976 · Marathon Man as Professor Biesenthal
• 1976 · Quincy, M.E. as Sen. William Pike
• 1975 · Wonder Woman as Dr. Solano
• 1975 · The Legend of Lizzie Borden as Mr. Andrew Borden
• 1974 · Petrocelli as Colonel William Fletcher
• 1973 · The Day of the Dolphin as Harold DeMilo
• 1973 · Barnaby Jones as Laurence Sheffield
• 1973 · Barnaby Jones as Jason Matthews
• 1972 · The Female Instinct as Anton de Tourolet
• 1972 · Kung Fu as Hillquist
• 1972 · Delphi Bureau as Vander
• 1972 · The Streets of San Francisco as Ted Whitlock
• 1972 · Banyon as Whitney Pemberton
• 1971 · Owen Marshall: Counselor at Law as Dr. Martin Cohen
• 1971 · Cannon as
• 1971 · Great Performances as Caterpillar
• 1971 · Great Performances as Creon
• 1970 · Night Gallery as Dr. Mazi
• 1970 · Dan August as Dr. Michael Serling
• 1970 · A Walk in the Spring Rain as Roger Meredith
• 1969 · Room 222 as
• 1969 · The Maltese Bippy as Mischa Ravenswood
• 1968 · The Mod Squad as John Palmer
• 1968 · The Outcasts as
• 1968 · Hawaii Five-O as Dr. Harvey Danworth
• 1968 · The Name of the Game as Walter Scharz
• 1967 · Mannix as William Avery
• 1967 · Mannix as Dr. Cameron McKenzie
• 1967 · Ironside as Paul Friedland
• 1967 · The Invaders as Deputy Ambassador Peter Borke
• 1966 · CBS Playhouse as David Hoffman
• 1966 · NET Playhouse as
• 1966 · Mission: Impossible as Erik Hagar
• 1966 · Mission: Impossible as Imre Rogosh
• 1966 · Mission: Impossible as Emil Skarbeck
• 1966 · Mission: Impossible as George Berlinger
• 1966 · Felony Squad as
• 1965 · The F.B.I. as Steven Colton
• 1965 · The F.B.I. as John Thomas Whiting
• 1965 · The F.B.I. as Paul Winters
• 1965 · The F.B.I. as Charles Ridgeway
• 1965 · The Big Valley as Burke Jordan
• 1965 · The Big Valley as Hebron Grant
• 1964 · Fail Safe as Col. Cascio
• 1964 · The Man from U.N.C.L.E. as Andrew Vulcan
• 1964 · 12 O'Clock High as Col. Peter Raff
• 1963 · Espionage as Richard Keller
• 1963 · The Great Adventure as Colonel Thomas Rose
• 1963 · The Fugitive as Joe Tucker
• 1962 · Combat! as Major Chaplain Ernest Miller
• 1961 · The New Breed as Arthur Grissom
• 1961 · Dr. Kildare as Arthur Hobler
• 1961 · Cain's Hundred as Martin Weir
• 1961 · The Defenders as Leo Graves
• 1961 · The Defenders as Vincent Kayle
• 1961 · The Asphalt Jungle as
• 1960 · Festival as Brutus
• 1959 · The Twilight Zone as William Sturka
• 1959 · The Twilight Zone as Chancellor
• 1959 · The Bell Telephone Hour as Self - Narrator
• 1959 · Rawhide as Jonathan Damon
• 1957 · DuPont Show of the Month as Charlie Castle
• 1957 · DuPont Show of the Month as Barsad
• 1956 · Tony Awards as Self - Winner
• 1956 · Tony Awards as Self - Memoriam (archive footage)
• 1955 · Gunsmoke as Marshal Burl Masters
• 1952 · Omnibus as
• 1952 · Omnibus as Newspaper Photographer
• 1951 · Hallmark Hall of Fame as Dr. Burnham
• 1950 · Armstrong Circle Theatre as Milovan Djilas
• 1948 · Studio One as George Hanley
• Future · Battles That Doomed Hitler as Narrator (voice)
• 2016 · The Congressman as Harlan Lantier
• 2004 · Imaginary Witness: Hollywood and the Holocaust as Self
• 2001 · Unsung Heroes of Pearl Harbor as
• 1995 · George Romero's Golden Tales 3 as
• 1994 · Spring Awakening as Captain Von Koster
• 1993 · Blind Spot as Simon
• 1990 · Preston Sturges: The Rise and Fall of an American Dreamer as Narrator (voice)
• 1989 · The Spirit of Pittsburgh as Narrator
• 1985 · The Hearst and Davies Affair as Arthur Beal
• 1983 · Don't Eat the Pictures: Sesame Street at the Metropolitan Museum of Art as Osiris
• 1983 · Alice in Wonderland as Caterpillar
• 1982 · Maid in America as Jonas
• 1980 · Nightkill as Herbert Childs
• 1980 · Children of Divorce as Eli Sorenson
• 1980 · Dan August: Once Is Never Enough as Dr. Michael Serling
• 1977 · Captains Courageous as Harvey Cheyne, Sr.
• 1977 · The Return of Wonder Woman as Dr. Solano
• 1975 · Henry James' The Jolly Corner as Spencer Brydon
• 1974 · Give Me Liberty as George Washington
• 1974 · A Touch of the Poet as Cornelius Melody
• 1974 · The Book of Murder as Henry
• 1974 · Antigone as Creon
• 1973 · Shock-A-Bye Baby as
• 1973 · Rx for the Defense as Dr. Daniel Kemper
• 1973 · Hunter as Cirrak
• 1972 · Heat of Anger as Vincent Kagel
• 1970 · Berlin Affair as Joe Mallicent
• 1970 · Company of Killers as John Shankalien
• 1967 · The Crucible as Reverend Hale
• 1967 · The Borgia Stick as Anderson
• 1965 · To Trap a Spy as Andrew Vulcan
• 1964 · The Guns of August as Narrator (voice)
• 1963 · The Power and the Glory as
• 1961 · Jane Eyre as
• 1961 · Man from a Missing Land as Self - Narrator (voice)
• 1948 · Studio One as George