Credits

• 1975 · Film Emigration from Nazi Germany as Self
• 1975 · One of Our Own as Dr. Helmut Von Schulthers
• 1974 · The Cafeteria as Father
• 1974 · The Tamarind Seed as General Golitsyn
• 1974 · Playhouse as
• 1973 · Kojak as Father Dimitrius
• 1972 · The Protectors as Zoltan Kolas
• 1970 · Song of Norway as Engstrand
• 1970 · The Executioner as Racovsky
• 1969 · The Madwoman of Chaillot as The Commissar
• 1968 · Assignment to Kill as Inspector Ruff
• 1968 · The Strange Case of Dr. Jekyll and Mr. Hyde as Stryker
• 1967 · Billion Dollar Brain as General Stok
• 1967 · The Happening as Sam
• 1966 · Funeral in Berlin as Colonel Stok
• 1965 · Joy in the Morning as Stan Pulaski
• 1964 · The Long Ships as Krok
• 1963 · Burke's Law as Janek Cybowski
• 1963 · Breaking Point as
• 1962 · Mooncussers as Urias Hawke
• 1962 · The Wonderful World of the Brothers Grimm as The Duke ('The Dream')
• 1962 · Boys' Night Out as Dr. Prokosch
• 1961 · Mr. Sardonicus as Krull
• 1961 · Ben Casey as
• 1960 · Play of the Week: Rashomon as Ghoul
• 1960 · Thriller as Pierre Jacquelin
• 1958 · Tempest as Savelic
• 1958 · Heart of Darkness as The Doctor
• 1958 · The Plot to Kill Stalin as Khrushchev
• 1958 · The Key as Van Dam
• 1957 · A Farewell to Arms as Dr. Emerich
• 1956 · War and Peace as Field Marshal Kutuzov
• 1955 · Matinee Theater as
• 1955 · Alfred Hitchcock Presents as Carl Kaminsky
• 1955 · Alfred Hitchcock Presents as Carpius
• 1955 · Alfred Hitchcock Presents as Jan Vander Klaue / Mr A J Keyser
• 1955 · The Seven Year Itch as Dr. Brubaker
• 1954 · Climax! as Christy Christakos
• 1954 · Prisoner of War as Col. Nikita I. Biroshilov
• 1953 · The House of the Arrow as Inspector Hanaud
• 1953 · General Electric Theater as King
• 1952 · Top Secret as Zekov
• 1952 · Cavalcade of America as Jeno Reinitz
• 1951 · Der schweigende Mund as Dr.Herbert Hirth
• 1951 · Deutscher Filmpreis as Self
• 1950 · The White Tower as Andreas (as Oscar Homolka)
• 1950 · Robert Montgomery Presents as
• 1949 · Anna Lucasta as Joe Lucasta
• 1948 · The Philco Television Playhouse as Bert
• 1948 · I Remember Mama as Uncle Chris
• 1947 · The Shop at Sly Corner as Desius Heiss
• 1943 · Hostages as Lev Pressinger
• 1943 · Mission to Moscow as Maxim Litvinov
• 1941 · Ball of Fire as Prof. Gurkakoff
• 1941 · Rage in Heaven as Dr. Rameau
• 1940 · The Invisible Woman as Blackie
• 1940 · Comrade X as Commissar Vasiliev
• 1940 · Seven Sinners as Antro
• 1937 · Ebb Tide as Capt. Jakob Therbecke
• 1937 · Sabotage as Karl Verloc - Her Husband
• 1936 · Everything Is Thunder as Detective Schenck Gotz
• 1936 · Rhodes of Africa as Ohm Paul Kruger
• 1933 · Unsichtbare Gegner as James Godfrey
• 1933 · Moral und Liebe as Robert Keßler
• 1932 · Nights in Port Said as
• 1932 · Night column as André Carno
• 1931 · In the Employ of the Secret Service as Lanskoi
• 1931 · Between Night and Dawn as Anton
• 1931 · 1914 as Sergei Dmitrijewitsch Sasonow
• 1931 · Road to Rio as Ricardo Gabiano
• 1930 · Dreyfus as Major Ferdinand Walsin-Esterházy
• 1930 · Hokuspokus as Gerichtspräsident Grandt
• 1930 · Revolte im Erziehungshaus as Erzieher
• 1928 · Schinderhannes as Amtmann
• 1928 · Die Leibeigenen as
• 1928 · Prince or Clown as Zurube
• 1928 · The Green Alley as Dr. Horner
• 1927 · Die heilige Lüge as Jack
• 1927 · Petronella - Das Geheimnis der Berge as Fridolin Bortis
• 1927 · Der Kampf des Donald Westhof as
• 1927 · Das Mädchen ohne Heimat as
• 1927 · Tragedy of the Street as Anton - Pimp
• 1927 · Brennende Grenze as Der Matrose
• 1926 · Die Abenteuer eines Zehnmarkscheines as Director Haniel