56. MARLENE DIETRICH
Witness for the Prosecution (1957)

More than 20 years past her movie-goddess peak, Dietrich still had her aristocratic elegance, spectacular cheekbones, and million-dollar legs. In the course of essaying the role of a murder suspect's wife, you can see the movie star transform herself into a character actress. She starts out frostily imperious, ends up emotionally destroyed, and somewhere in between pops up disguised as a Cockney-accented harpy. Charles Laughton doesn't recognize her. Neither do we.