4. INGRID BERGMAN
Casablanca (1942)

When Bergman walks into Rick's Cafe, her Ilsa is ''the most beautiful woman ever to visit Casablanca.'' She pulls us in with a simmering-below-the-surface eroticism and an un-Hollywood freshness that makes her seem earthbound and attainable. And like all great screen actors, she made the camera an accomplice. Watch her face, held in a tight, caressing close-up, as Dooley Wilson's Sam first sings ''As Time Goes By.'' A lesser actress might have overemoted, but Bergman restricts expression to a minimum and just lets the camera play across that gorgeous profile. It's one of those wonderfully mysterious moments when an actor, seemingly by doing nothing, lets us imagine everything.