ZAC ATTACK. (Grace Norwich)

Zac Efron has stolen the hearts of America's tweens - and with good reason! Not only is he cute and funny, but he can also sing, dance and act. He made us laugh as the girl-crazy Cameron Bale on the WB's Summerland and stole out hearts as the romantic jock Troy Bolton in Disney Channel's High School Musical. With two songs on the Billboard Top 100 list, the soundtrack for High School Musical as the #1 album on the iTunes Music Store and Amazon.com, and roles in upcoming movies, Zac is the reigning tween king. Get the scoop on this squeaky-clean heartthrob in Zac Attack!