In "Cloud Atlas," set to hit theaters this Friday, the cast more than earns its SAG dues: Tom Hanks, Halle Berry, Jim Broadbent, Jim Sturgess and other heavy hitters juggle about a half-dozen roles apiece in the process of telling the six time-hopping stories that make up the film. Audience members will need name tags to keep the actors' various characters straight -- the usually familiar faces of the cast are rendered virtually unrecognizable from story to story using makeup and costuming. (Genders and races, controversially, are not kept consistent throughout.)
To tide us over until the movie's long-anticipated release, we compiled a list of some of our favorite dual-role thespians through the ages. From the 1921 Buster Keaton vehicle "The Playhouse" to "Cloud Atlas," here are the top two-(or three, or four, or even more)-faces of film.