(1997) Titanic

as John Astor

(1971) Escape from the Planet of the Apes

as Dr. Otto Hasslein

(1978) Piranha

as Dr. Robert Hoak (swimming double) (uncredited)

(1998) Meet the Deedles

as Elton Deedle

(1961) Operation Eichmann

as Klaus

(1970) Colossus: The Forbin Project

as Dr Charles Forbin

(1969) 100 Rifles

as Lt. Franz Von Klemme

(2008) The Man Who Came Back

as Reese Paxton

(1968) Dayton's Devils

as Max Eikhart

(1990) The Ambulance

as The Doctor

(1973) The Adulteress

as Hank Baron

(1977) Code Name: Diamond Head

as Ernest Graeber

(1980) The Aliens Are Coming

as Leonard Nero

(2007) 3055 Jean Leon

as Self

(1969) Honeymoon with a Stranger

as Frederico Caprio

(1973) Death Race

as Stoeffer

(1978) Happily Ever After

as Ross Ford

(1970) The Mask of Sheba

as Dr. Roan Morgan

(2002) WWE Unforgiven 2002

as Self

(1974) The Ultimate Thrill

as Roland Parlay

(1972) The Judge and Jake Wyler

as Anton Granicek

(1973) Portrait: A Man Whose Name Was John

as Col. Gunter Kroll

(2017) And the Winner Isn't

as Self

(2018) Den of Thieves

as Ziggy Zerhusen

(1977) Herbie Goes to Monte Carlo

as Bruno Von Stickle

(1979) The Power Within

as Stephens

(1973) Lady Ice

as Peter Brinker

(1973) The Six Million Dollar Man: Wine, Women and War

as Arlen Findletter

(1965) Morituri

as Radio Officer (uncredited)

(1975) Death Scream

as Kosinsky

(1993) Perry Mason: The Case of the Wicked Wives

as David Morrison

(1973) Intertect

as Emhardt

(1999) The Titanic Chronicles

as (voice)

(1984) Murder, She Wrote

as Col. Gerhardt Brunner

(1967) Garrison's Gorillas

as ---

(1977) CHiPs

as ---

(1962) The Gallant Men

as ---

(2005) How I Met Your Mother

as Robin Scherbatsky Sr.

(1972) The Rookies

as ---

(2003) Hope & Faith

as Lance Taylor

(1963) Kraft Suspense Theatre

as Gerd Hoffman

(1965) The F.B.I.

as Nicholas Blok

(1968) Hawaii Five-O

as Dr. Paul Farrar

(1993) The Nanny

as Frank Bradley

(1996) E! True Hollywood Story

as ---

(1976) Charlie's Angels

as John Reardon

(1967) Mannix

as ---

(1973) Kojak

as Kenneth Krug

(1955) Gunsmoke

as Carl Jaekel

(1962) Combat!

as Drunken German soldier (uncredited)

(1975) Wonder Woman

as Donalsen

(1966) Mission: Impossible

as Col. Markus von Frank

(1971) Cannon

as ---

(1993) Diagnosis: Murder

as Eric Braeden

(1978) Vega$

as Arthur Rollins

(1965) Run for Your Life

as Eric Horst

(1975) Switch

as Mike Jenkins

(1962) The Virginian

as Augustin

(1970) McCloud

as ---

(1970) The Young Rebels

as ---

(1973) The Young and the Restless

as Victor Newman

(1975) Barbary Coast

as Bristol

(1966) The Rat Patrol

as Capt. Hans Dietrich

(1974) The Daytime Emmy Awards

as ---

(1966) Jericho

as ---

(1958) 77 Sunset Strip

as German Soldier (uncredited)

(1978) The Eddie Capra Mysteries

as ---

(1966) Blue Light

as ---

(1975) Bronk

as ---

(1974) Kolchak: The Night Stalker

as Bernhardt Stieglitz

(1975) Matt Helm

as Forbes

(1973) The Magician

as Nelson Paradine

(1990) Lucky Chances

as Dimitri Stanislopolous

(1965) The F.B.I.

as Becker

(1962) Combat!

as Ecktmann

(1962) Combat!

as German Vehicle Commander

(1962) Combat!

as Hans Gruber

(1955) Gunsmoke

as Jack Sinclair

(1955) Gunsmoke

as William E. Talley

(1968) Hawaii Five-O

as Klaus Marburg

(1968) Hawaii Five-O

as Djebara

(1965) Run for Your Life

as Janos Takacs

(1974) The Six Million Dollar Man

as Victor Cheraskin

(1963) Bob Hope Presents the Chrysler Theatre

as Manfred Scharff

(1966) Mission: Impossible

as Andrei Fetyakov

(1975) Switch

as Franz Hausner

(1973) Barnaby Jones

as Steven Kingston

(1972) Banacek

as Paul Bolitho

(1975) Wonder Woman

as Captain Drangel

(1963) Bob Hope Presents the Chrysler Theatre

as Kurt Krug

(1969) Marcus Welby, M.D.

as Pastor Goodleigh

(1977) How the West Was Won

as Francis Britten