Hometown: Bedford, N.Y.
Where You've Seen Her: You've more likely been hearing about Rooney non-stop thanks to the recent announcement that she's been cast as the lead in David Fincher's American version of The Girl With the Dragon Tattoo. But she's already dropped our jaws and left our drool unmopped twice already this year, first as a promiscuous high-schooler in Youth in Revolt, then as the terrorized but tantalizing Nancy in the Nightmare on Elm Street remake. We're sure we'll continue to make a slobbery mess once we catch her in Fincher's The Social Network, in theaters Friday. Rooney, friend us, please!
We Call Her Awesome: "[My Youth in Revolt character's] trying to sleep with 25 guys before she goes to college. She has a wall of Polaroids and grades the guys based on their performance. She's not a slut—she's a genius. And it's an experiment...Well, I guess you could call her a slut." —Interview