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Erich Oswald Stroheim, known as Erich von Stroheim, was an Austrian-American actor, director, and screenwriter. He adopted the aristocratic "von" to his name in 1919, although he had no claim to nobility. Stroheim's films often explored themes of decadence, sexuality, and the clash between old and new values. He is best known for his work on films such as "Greed" (1924) and "Sunset Boulevard" (1950).