Zac Efron Graduates from High School Musical to Hairspray

OK, admit it - you totally sing the songs from High School Musical in the shower. That made-for-TV musical has been a gigantic boost for both the Disney Channel and its cast members.

Case in point: Zac Efron has been cast as hunky Link Larkin in the upcoming movie of the hit Broadway musical Hairspray, set to hit theaters in 2007.

In other Hairspray happenings, West Wing star Allison Janney (who also played Meryl Streep's Sapphic sweetie in The Hours) will play humorless Prudy Pingleton, while Amanda Bynes has been cast as Prudy's "checkerboard chick" daughter Penny.

This project is turning so "all-star," they should have their pictures in a row of boxes at the bottom of the poster.