1 of 10 Lacey Terrell/HBO
Amanda Seyfried - This Big Love beauty has the kind of acting range that will have film directors fighting over her.
2 of 10 Eric Liebowitz/The CW
Blake Lively - This Gossip Girl turns heads with her gorgeous, leggy looks and captures fans hearts with her emotional monologues.
3 of 10 courtesy Fox Searchlight
Ellen Page - This young talent got her first big role in Hard Candy, but her real breakthrough came as the sarcastic title character in Juno, for which she got a Golden Globe nomination.
4 of 10 courtesy Miramax
James McAvoy - This Scottish charmer with eyes as blue as Loch Ness is impressing American audiences with his head-turning roles in The Last King of Scotland and Atonement.
5 of 10 Randy Tepper/Showtime
Madeleine Martin - Californication's sage-beyond-her-years rock-and-roll daughter actually got her start voicing the lead role in the animated children's series JoJo's Circus. Clearly she's got range - and a big future in front of her!
6 of 10 courtesy Fox Searchlight
Michael Cera - There's nothing Arrested about this rising star's career Development. From youngest Bluth to Superbad sweetie to Juno's lovable lover-man, and there's no telling where he'll go next.
7 of 10 Paramount Vantages
Paul Dano - Playing the silent brother in Little Miss Sunshine may not have had many dialogue lines, but Dano's turn as a maniacal clergyman in There Will Be Blood has put him on the track to stardom.
8 of 10 Michael Desmond/Fox
Summer Glau - A former ballerina, Glau's natural elegance is hard to miss, even when she's mentally unbalanced (Firefly) and a monster-machine-in-human-form in Terminator: The Sarah Connor Chronicles.
9 of 10 Michael Muller/NBC
Taylor Kitsch - This Friday Night Lights star has the abs of a Greek God and the acting chops of a young Brad Pitt.
10 of 10 Jill Greenberg/Fox
Thomas Dekker - With his slightly disaffected everykid look, Dekker left Heroes to take on the iconic role as John Connor, the boy who will grow up to save the world, on Terminator: The Sarah Connor Chronicles.