(1966) Agent for H.A.R.M.

as Adam Chance

(1968) How to Steal the World

as Mr. Webb

(1956) Friendly Persuasion

as Gardner 'Gard' Jordan

(2002) Poolhall Junkies

as Phillip

(1957) The Strange One

as Cadet Colonel Corger (as Mark Richman)

(1959) The Black Orchid

as Noble

(1971) Yuma

as Maj. Lucas

(1965) Dark Intruder

as Robert Vandenburg

(2011) After the Wizard

as Charles Samuel Williams

(1961) The Crimebusters

as Nicholas Cain

(1954) Middle of the Night

as Jack

(2006) Vic

as Paul Marcus

(1958) Girls on the Loose

as Police Lt. Bill Hanley

(1983) Dempsey

as Tex Rickard

(1961) The Murder Men

as Nick Cain

(1976) Mallory: Circumstantial Evidence

as John Shields

(1978) The Islander

as Lt. Larkin

(1970) House on Greenapple Road

as Sal Gilman

(1984) City Killer

as Lieutenant Walling

(1974) Nightmare at 43 Hillcrest

as ---

(1968) For Singles Only

as Gerald Pryor

(1979) In Search of Historic Jesus

as God (voice)

(2001) 4 Faces

as Harlan Gregory / Carlo / Gerhardt / Daniel

(2000) Bruce Lee: A Warrior's Journey

as Duke Paige (archive footage) (uncredited)

(1988) Judgement Day

as Priest

(1988) Bonanza: The Next Generation

as Mr. Dunson

(1991) The Naked Gun 2½: The Smell of Fear

as Dunwell

(2011) Mysteria

as Senator Mitchell

(1980) Conquest of the Earth

as Col. Briggs

(2010) His Name Was Jason: 30 Years of Friday the 13th

as Self

(1980) PSI Factor

as Edgar Hamilton

(2009) The Desperate

as Dr. Blumenthal

(1998) Bruce Lee: The Intercepting Fist

as Self

(2013) Crystal Lake Memories: The Complete History of Friday the 13th

as Self

(1989) Friday the 13th Part VIII: Jason Takes Manhattan

as Charles McCulloch

(1986) Defenders of the Earth: The Story Begins

as ---

(1998) Gary Cooper: The Face of a Hero

as Self

(1984) Murder, She Wrote

as Lamar Bennett

(1999) Batman Beyond

as Winchell (voice)

(1979) B. J. and the Bear

as ---

(1961) Cain's Hundred

as Nicholas 'Nick' Cain

(1987) Star Trek: The Next Generation

as Ralph Offenhouse

(1982) T. J. Hooker

as ---

(1986) Defenders of the Earth

as ---

(1990) Beverly Hills, 90210

as ---

(1965) The F.B.I.

as Maury Maddock

(1986) Matlock

as ---

(1976) The Bionic Woman

as ---

(1968) Hawaii Five-O

as Nick Morgan

(1982) Knight Rider

as Dr. Klaus Bergstrom

(1976) Quincy, M.E.

as ---

(1972) The Streets of San Francisco

as ---

(1975) Baretta

as ---

(1973) Hawkins

as Paul Forbes

(1979) 240-Robert

as ---

(1981) Dynasty

as Andrew Laird

(1968) Land of the Giants

as Dr. Marad

(1976) Charlie's Angels

as Ken Atamien

(1982) Hotel

as ---

(1971) Longstreet

as ---

(1977) Three's Company

as Reverend Snow

(1979) Hart to Hart

as ---

(1955) Gunsmoke

as Norm Trainer

(1996) Superman: The Animated Series

as Abin Sur / Guardian #1 (voice)

(1962) Combat!

as Capt. Aptmeyer

(1978) Dallas

as Maynard Anderson

(1975) Wonder Woman

as Dr. Crippin

(1977) Dog and Cat

as ---

(1966) Mission: Impossible

as Gen. Stefano Aragas

(1971) Cannon

as ---

(1959) The Twilight Zone

as Robert Franklin

(1984) Crazy like a Fox

as Dr. Donald Rafelman

(1955) Alfred Hitchcock Presents

as Officer Barrett

(1966) Felony Squad

as ---

(1965) The Wild Wild West

as Prince Gio

(1959) Rawhide

as Lloyd Mastic

(1978) Vega$

as Grady

(1973) Police Story

as ---

(1963) The Fugitive

as Johnny

(1964) Daniel Boone

as Hawk

(1975) Switch

as Saunders

(1962) The Virginian

as Johnny Madrid

(1968) Lancer

as Carl Bolton

(1978) Sword of Justice

as ---

(1972) Search

as ---

(1970) McCloud

as ---

(1963) The Fugitive

as Deputy Steel

(1951) Schlitz Playhouse of Stars

as Bat La Rue

(1980) Galactica 1980

as Colonel Briggs

(1980) Galactica 1980

as Col. Briggs

(1965) The Loner

as ---

(1964) Profiles in Courage

as Rawlins

(1988) Supercarrier

as ---

(1948) The Philco Television Playhouse

as ---

(1961) Ben Casey

as ---

(1949) Suspense

as Young Officer

(1956) Dick Powell's Zane Grey Theatre

as Gar Durand

(1955) Playwrights '56

as ---

(1962) Stoney Burke

as ---

(1974) Get Christie Love!

as ---

(1963) The Outer Limits

as Prof. Ian Fraser

(1970) McCloud

as Peter B. Clifford

(1966) Jericho

as ---

(1959) The DuPont Show with June Allyson

as David

(1992) Batman: The Animated Series

as Charles Baxter (voice)

(1966) Blue Light

as ---

(1975) Starsky & Hutch

as Avery Schiller

(1967) Ironside

as Daryll Frazer

(1966) Mission: Impossible

as Dr. Hargreaves

(1965) The F.B.I.

as Hammond

(1965) The F.B.I.

as John Parker

(1965) The F.B.I.

as Vincent Preston Gray

(1965) The F.B.I.

as Vince Manyan

(1965) The F.B.I.

as Rudy Waldon

(1965) The F.B.I.

as Johnny Sutton

(1965) The F.B.I.

as William Braden

(1962) The Virginian

as Jack Wade

(1962) The Virginian

as Al Keets

(1963) The Outer Limits

as Jefferson Rome

(1979) Blind Ambition

as Robert Mardian

(1982) Knight Rider

as Kleist

(1968) The Name of the Game

as Latimer

(1968) The Name of the Game

as Robert Coates

(1955) Alfred Hitchcock Presents

as Mike

(1970) The Silent Force

as Walter Garland

(1959) Bonanza

as Richard Vardeman

(1984) Santa Barbara

as C.C. Capwell

(1974) The Six Million Dollar Man

as Dr. Walter Ellis

(1994) Spider-Man

as Old Peter Parker / Old Spider-Man

(1979) Hart to Hart

as Arthur Horton

(1964) 12 O'Clock High

as Col. Kendal Hunter

(1984) Finder of Lost Loves

as Frank Cunningham

(1978) Greatest Heroes of the Bible

as King Bera

(1948) The Philco Television Playhouse

as Jack

(1948) The Philco Television Playhouse

as Charles Blake

(1948) The Philco Television Playhouse

as Tinian

(1967) The Invaders

as Tom Wiley

(1977) The Incredible Hulk

as Ellis Jordan

(1967) The Invaders

as Andrew Hatcher

(1962) The Virginian

as Wade

(1974) Petrocelli

as Leo Roman

(1972) Banacek

as Andy Cole

(1969) My Friend Tony

as ---

(1947) Kraft Television Theatre

as Mack

(1967) Mannix

as Martin Emory

(1978) Fantasy Island

as Roy Burke

(1967) Ironside

as Lou Parker