Credits

• 2016 ·The Last Laughas Self
• 1992 ·Queen Estheras Haman (voice)
• 1991 ·The Cabinet of Dr. Ramirezas Fat Man Looking for a Tax Break
• 1990 ·Law & Orderas William Unger
• 1989 ·The Simpsonsas Colonel Klink (voice)
• 1988 ·Cabaretas Herr Schultz
• 1986 ·Mr. Sunshineas
• 1982 ·Matt Houstonas Felix Randolph
• 1981 ·The Return of the Beverly Hillbilliesas C.D. Medford
• 1980 ·Steve Martin: Comedy Is Not Prettyas Plato
• 1978 ·Vega$as
• 1977 ·The Love Boatas Mr. Perkins
• 1977 ·Tabithaas
• 1977 ·The Rhinemann Exchangeas Franz Altmuller
• 1972 ·Assignment: Munichas Insp. Hoffman
• 1972 ·Place of Belongingas Narrator
• 1971 ·McMillan & Wifeas Dr. Ernest Bleeker
• 1971 ·McMillan & Wifeas Van Doren
• 1970 ·Night Galleryas
• 1969 ·Wake Me When the War Is Overas Maj. Erich Mueller
• 1968 ·The Doris Day Showas Werner Klemperer
• 1968 ·Star Spangled Salesmanas Chief's Boss
• 1968 ·The Wicked Dreams of Paula Schultzas Klaus
• 1967 ·Rowan & Martin's Laugh-Inas Self
• 1966 ·Batmanas Colonel Klink
• 1965 ·Bing Crosby Color Christmas Showas Self/Col. Klink
• 1965 ·Hogan's Heroesas Wilhelm Klink
• 1965 ·Lost in Spaceas Bolix
• 1965 ·Ship of Foolsas Lt. Huebner
• 1965 ·Dark Intruderas Prof. Malaki
• 1964 ·Youngblood Hawkeas Mr. Leffer
• 1963 ·Bob Hope Presents the Chrysler Theatreas Colonel Wertha
• 1963 ·The Dakotasas
• 1962 ·Escape from East Berlinas Walter Brunner
• 1962 ·General Electric Trueas
• 1961 ·Judgment at Nurembergas Emil Hahn
• 1961 ·Operation Eichmannas Adolf Eichmann
• 1960 ·The Case of the Dangerous Robinas Jan Hoveen
• 1960 ·Peter Loves Maryas
• 1960 ·The Islandersas Michel Serati
• 1960 ·Checkmateas Franz Leder
• 1960 ·Thrilleras Mr. Clark
• 1959 ·Adventures in Paradiseas Kuberli
• 1959 ·The Alaskansas
• 1959 ·The Third Manas
• 1959 ·Men Into Spaceas
• 1959 ·Judgment at Nurembergas Emil Hahn
• 1959 ·One Step Beyondas Herr Bautmann
• 1959 ·Rawhideas
• 1958 ·Houseboatas Harold Messner
• 1958 ·77 Sunset Stripas
• 1958 ·Behind Closed Doorsas
• 1958 ·Steve Canyonas Linz
• 1958 ·The Goddessas Joe Wilsey
• 1958 ·The High Cost of Lovingas Joseph Jessup
• 1957 ·Kiss Them for Meas Lt. Walter Wallace
• 1957 ·Maverickas Alex Jennings
• 1957 ·Perry Masonas Stefan Riker
• 1957 ·Perry Masonas Ulric Zenas
• 1957 ·Perry Masonas Police Insp. Hurt
• 1957 ·M Squadas Heinrich Ronn
• 1957 ·The Thin Manas
• 1957 ·Have Gun, Will Travelas
• 1957 ·Istanbulas Paul Renkov
• 1956 ·The Wrong Manas Dr. Bannay (uncredited)
• 1956 ·Five Steps to Dangeras Dr. Frederick Simmons
• 1956 ·Death of a Scoundrelas Herbert Bauman (Clementi's lawyer)
• 1956 ·Flight to Hong Kongas Bendesh
• 1956 ·Playhouse 90as Emil Hahn
• 1956 ·Wire Serviceas Krylov
• 1956 ·Tony Awardsas Self - Nominee
• 1955 ·Matinee Theateras
• 1955 ·Alfred Hitchcock Presentsas Professor Klopka / Captain Kriza
• 1955 ·Alfred Hitchcock Presentsas Mr. Ranks
• 1955 ·Navy Logas
• 1955 ·Gunsmokeas Clifton Bunker
• 1954 ·Climax!as
• 1954 ·Studio 57as
• 1953 ·General Electric Theateras Mr. Muller
• 1952 ·China Smithas
• 1948 ·The Philco Television Playhouseas Leopold
• 1948 ·The Philco Television Playhouseas