1972
Hollywood: The Dream Factory as Self (archive footage)1966
The Fortune Cookie as Professor Winterhalter1966
The Last of the Secret Agents? as Prof. Werner von Koenig1966
Way... Way Out as Russian Delegate1966
Doom of Dracula as The Burgomaster (archive footage)1965
Hank as Not available1964
The Addams Family as Eric Von Bissell1964
Daniel Boone as Van Coot1964
Robin and the 7 Hoods as Hammacher (uncredited)1964
36 Hours as German Guard1963
Petticoat Junction as Professor Lieberschmit1963
The Danny Kaye Show as Self1961
The Errand Boy as Baron Elston Carteblanche1961
One, Two, Three as Count von Droste Schattenburg (voice) (uncredited)1960
Pete and Gladys as Not available1959
The Many Loves of Dobie Gillis as Not available1959
One Step Beyond as Franz Schuldorf1959
Johnny Staccato as Not available1958
Lawman as Not available1957
Maverick as Not available1957
Maverick as Capt. Steeger1957
The Wings of Eagles as Manager1956
The Dinah Shore Chevy Show as Self1955
Many Rivers to Cross as Spectacle Man1955
Spy Chasers as King Rinko1955
Carolina Cannonball as Stefan1954
White Christmas as Landlord (uncredited)1954
The Glenn Miller Story as W. Kranz1954
Living It Up as Dr. Emile Egelhofer1954
3 Ring Circus as Fritz Schlitz1953
General Electric Theater as Dr. Haegendorff1953
Private Secretary as Not available1953
Stalag 17 as Sgt. Johann Sebastian Schulz1953
Houdini as Schultz1953
The Girl on The Roof as Not available1952
O. Henry's Full House as Menkie (segment "The Gift of the Magi") (uncredited)1952
The World in His Arms as General Ivan Vorashilov1952
Ma and Pa Kettle on Vacation as Cyrus Kraft1951
On the Riviera as Gapeaux1950
Father Is a Bachelor as Jericho Schlosser1949
Border Incident as Hugo Wolfgang Ulrich1948
The Emperor Waltz as Dr. Zwieback1948
If You Knew Susie as Count Alexis1948
Give My Regards to Broadway as Arthur Dinkel1947
Mother Wore Tights as Papa1946
A Night in Casablanca as Count Pfefferman / Heinrich Stubel1946
Night and Day as Wilowski1946
Faithful in My Fashion as Professor Boris Riminoffsky1945
A Royal Scandal as General Ronsky1945
The Dolly Sisters as Ignatz Tsimmis1945
She Went to the Races as Dr. Gurke1945
Men in Her Diary as Mme. Irene1944
It Happened Tomorrow as Mr. Beckstein1944
House of Frankenstein as Burgomeister Hussman1944
The Hitler Gang as General von Hindenburg1944
Summer Storm as Kuzma1943
The Song of Bernadette as Louis Bouriette1943
Tarzan Triumphs as Sergeant1943
Government Girl as Ambassador1943
Sweet Rosie O'Grady as Joe Flugelman1943
They Came to Blow Up America as Dr. Herman Holger1942
To Be or Not to Be as Col. Ehrhardt1942
Desperate Journey as Preuss1942
Crossroads as Dr. Alex Dubroc1942
China Girl as Jarubi1942
Remember Pearl Harbor as Dirk Van Hoorten1942
Berlin Correspondent as Dr. Dietrich1942
Enemy Agents Meet Ellery Queen as Heinrich, Spy Leader1941
That Uncertain Feeling as Kafka (as Sig Rumann)1941
Love Crazy as Dr. Wuthering1941
The Wagons Roll at Night as Hoffman the Great1941
So Ends Our Night as Ammers1941
Breakdowns of 1941 as Self (archive footage) (uncredited)1941
Shining Victory as Professor Herman Von Reiter1941
World Premiere as Franz von Bushmaster1941
This Woman Is Mine as John Jacob Astor1941
The Man Who Lost Himself as Dr. Simms (as Sig Rumann)1940
Comrade X as Emil Von Hofer1940
Four Sons as Newmann1940
Dr. Ehrlich's Magic Bullet as Dr. Hans Wolfert1940
Victory as Mr. Schomberg1940
Bitter Sweet as Herr Schlick1940
I Was an Adventuress as Herr Protz1940
Outside the Three-Mile Limit as Van Cleve1939
Ninotchka as Comrade Iranoff1939
Only Angels Have Wings as Dutchy1939
Confessions of a Nazi Spy as Krogman1939
Honolulu as Psychiatrist1939
Remember? as Dr. Schmidt1939
Never Say Die as Poppa Ingleborg1938
Suez as Sergeant Pellerin1938
The Saint in New York as Hutch Rellin1938
The Great Waltz as Wertheimer1938
I'll Give a Million as Anatole Primerose1938
Paradise for Three as Mr. Bold1938
Girls on Probation as Roger Heath1937
Heidi as Police Captain1937
Nothing Sacred as Dr. Emil Eggelhoffer1937
Lancer Spy as Lt. Col. Gottfried Hollen1937
A Day at the Races as Dr. Leopold X. Steinberg1937
Seventh Heaven as Durand (as Sig Rumann)1937
Thank You, Mr. Moto as Colonel Tchernov1937
This Is My Affair as Gus1937
Think Fast, Mr. Moto as Nicolas Marloff1937
Thin Ice as Prime Minister1937
On the Avenue as Herr Hanfstangel1937
Maytime as Fanchon (as Sig Rumann)1937
The Great Hospital Mystery as Dr. Taggert1937
Love Under Fire as General Montero1937
Midnight Taxi as John B. Rudd1936
The Princess Comes Across as Steindorf1936
The Bold Caballero as Commandante Sebastian Golle1935
A Night at the Opera as Gottlieb1935
The Wedding Night as Mr. Jan Novak1935
Spring Tonic as Matt Conklin1935
The Farmer Takes a Wife as Blacksmith (as Siegfried Rumann)1935
East of Java as Hans Muller1935
Under Pressure as Doctor1934
Marie Galante as Brogard1934
The World Moves On as Baron von Gerhardt (as Siegfried Rumann)1934
Servants' Entrance as Hans Hansen (as Siegfried Rumann)1929
Lucky Boy as Bridge player (Unbilled)1929
Die Königsloge as Bailiff