(1974) The Questor Tapes

as Jerry Robinson

(1985) Private Sessions

as Dr. Joe Braden

(1968) Dayton's Devils

as Voucher Captain

(2005) Locusts

as Lyle Rierden

(1981) El Salvador: Another Vietnam

as Narrator

(1973) She Cried Murder

as Walter Stepanic

(1974) Live Again, Die Again

as James Carmichael

(1986) Vanishing Act

as Harry Kenyon

(1963) Captain Newman, M.D.

as Patient (uncredited)

(2004) The Clinic

as Dr. Cyrus Gachet

(1968) Targets

as Man in Phonebooth

(1983) Memorial Day

as Matt Walker

(1973) Nightmare Step

as Steven

(1967) The Graduate

as Hotel Lobby Bellhop (uncredited)

(1982) Prime Suspect

as Frank Staplin

(2024) M*A*S*H: The Comedy That Changed Television

as Self

(2022) M*A*S*H: When Television Changed Forever

as Self

(1968) Panic in the City

as Dick Blaine

(2007) Out at the Wedding

as Father of the Bride

(1980) Damien: The Leper Priest

as William Robertson

(1991) Lockdown

as Prentiss

(1996) Hanged on a Twisted Cross

as Bonhoeffer

(1996) Superman: The Last Son of Krypton

as Jonathan Kent (voice)

(1989) A Deadly Silence

as Atty. Gianelli

(1995) The Killers Within

as Congressman Clayton

(2002) M*A*S*H: 30th Anniversary Reunion

as Himself/Host

(1989) Incident at Dark River

as Tim McFall

(1972) The Longest Night

as Wills

(2018) Bucky and the Squirrels

as Mike Farrell

(1983) Choices of the Heart

as Ambassador Robert E. White

(1978) Battered

as Michael Hawks

(1990) The Price of the Bride

as Joe Roth

(1997) Sins of the Mind

as William

(1988) UFO Cover-Up?: Live!

as ---

(1991) Silent Motive

as Detective Paul Trella

(1991) Memories of M*A*S*H

as Self / BJ Hunnicutt

(2000) The Tulsa Lynching of 1921: A Hidden Story

as ---

(1979) Letters from Frank

as Richard Miller

(2003) The Crooked E: The Unshredded Truth About Enron

as Kenneth Lay

(1979) Sex and the Single Parent

as George McGee

(2013) Valentino's Ghost

as Narrator (voice)

(1972) Doomsday Machine

as 1st Reporter

(1994) Hart to Hart: Old Friends Never Die

as Frank Crane

(1967) Countdown

as Houston Engineer (uncredited)

(2006) Superman: Brainiac Attacks

as Jonathan Kent (voice)

(1991) The Whereabouts of Jenny

as Van Zandt

(1984) Murder, She Wrote

as Drew Borden

(1967) Garrison's Gorillas

as ---

(1972) M*A*S*H

as B. J. Hunnicutt

(2005) Ghost Whisperer

as Bill Jett

(1999) Providence

as Jim Hansen

(1965) I Dream of Jeannie

as Arland

(2004) Desperate Housewives

as Milton Lang

(1986) Matlock

as Judge David Bennett

(1996) E! True Hollywood Story

as ---

(1999) Law & Order: Special Victims Unit

as Jonah Malcolm

(2002) Without a Trace

as Ross Anderson

(1969) The Bill Cosby Show

as ---

(1962) Combat!

as Doctor

(1954) Lassie

as ---

(1971) Cannon

as ---

(1967) Ironside

as ---

(1970) The Interns

as Dr. Sam March

(1966) The Monkees

as ---

(1974) Harry O

as ---

(1964) Daniel Boone

as Johnson

(1972) The Sixth Sense

as ---

(1974) The New Land

as ---

(1972) Ghost Story

as Frank Simmons

(1996) Superman: The Animated Series

as Jonathan Kent (voice)

(2001) Justice League

as Jonathan Kent / Store Owner (voice)

(2004) Justice League Unlimited

as Jonathan Kent / Brainiac (voice)

(1961) The Mike Douglas Show

as Self

(1974) The Six Million Dollar Man

as David Tate

(2005) Supernatural

as Fred Jones

(1962) Ensign O'Toole

as Ferguson

(2016) American Crime Story

as Lee Miglin

(1967) Ironside

as Bellhop (uncredited)

(1969) The Bold Ones: The New Doctors

as Dr. Vic Wheelwright

(1961) The Dick Powell Show

as Young Couple Boy

(1969) The Bill Cosby Show

as Al Socconis

(1967) Mannix

as Clay Riegles

(1974) Dinah!

as Self

(1972) Banacek

as Jason Trotter

(1962) McHale's Navy

as The Gunner

(1976) McNaughton's Daughter

as Colin Pierce

(2003) NCIS

as Miles Deakin

(1989) Coach

as Jeffrey

(1961) The Mike Douglas Show

as Self - Co-Host

(1969) Love, American Style

as Young Man