Multiple Choices: One Film, One Actor, More than One Great Role

Alec Guinness: as the Duke / the Banker / the Parson / the General / the Admiral / Young Ascoyne / Young Henry / Lady Agatha
Kind Hearts and Coronets (1949) In the days before high-tech prosthetics and special effects, Guinness's turn as eight members of a goofy, scheming noble family is astonishing—especially when they all sit down to dinner.

Jeremy Irons: as Beverly Mantle / Elliot Mantle
Dead Ringers (1988) Irons suffuses his twin gynecologists with completely different haunting personalities. Fraternal love was never so creepy.

Mike Myers: as Austin Powers / Dr. Evil / Fat Bastard 
Austin Powers: The Spy Who Shagged Me (1999) Not one, not two, but three instantly quotable characters in one film? We hope Myers got paid one million dollars!

Peter Sellers: as Group Captain Lionel Mandrake / President Merkin Muffley / Dr. Strangelove 
Dr. Strangelove: or How I Learned to Stop Worrying and Love the Bomb (1964) Credit Stanley Kubrick with making a pitch-black satire about nuclear war, but it's Sellers, switching effortlessly among his manic roles, who keeps it pitch-perfect.

Eddie Murphy: as Sherman Klump / Buddy Love / Lance Perkins / Papa Klump / Mama Klump / Grandma Klump / Ernie Klump
The Nutty Professor (1996) Murphy's sketch-comedy skills helped him create the memorable Klump family—vulgar, over-the-top, and very, very funny.