Age: 23
Best projects: Superbad (2007), Zombieland (2009), Easy A (2010), Friends with Benefits (2011), Crazy, Stupid, Love. (2011), The Amazing Spider-Man (2012)

Didn’t think you’d see Emma Stone here, did you? It’s cool—we almost forgot to include her in the initial, longer list ourselves. Because, if you think about it, Stone seems much older than 23, thanks to her seasoned performances and camera-dominating appearances on talk shows.

And to think, Stone’s run straight onto the A-list began with Jonah Hill trying desperately to have sex with her in 2007’s Superbad. Since then, Stone has wonderfully flexed her comedic muscles in Zombieland, Easy A, and Crazy, Stupid, Love., three superb mainstream victories that more than make up for the inferior (yes, that’s right) The Help. Yet, who can hate on The Help after its awards season domination? It's just another victory for Stone.

This summer, she’s going blonde for The Amazing Spider-Man, checking into her first major blockbuster to play long-established Marvel Comics love interest Gwen Stacy. Unlike every other female lead in recent superhero flicks, though, Stone will no doubt justify the character’s existence beyond superficial purposes.