Remember when no one knew who Leighton Meester, Evangeline Lilly or Taylor Kitsch were? It just takes one solid role on a breakout show to turn someone into a bonafide television star. With a big crop of new shows hitting your screens this fall, we thought we'd take the guesswork out of it and give you a head start on your soon-to-be heartthrobs, heroes, and major girl-crushes.

-- Carina MacKenzie, Zap2it