Matthew Perry plays an unhappily divorced father whose life didn't quite turn out the way he wanted it to. He wishes he could go back to high school and do it all over again. Guess what? His wish comes true. He transforms into Zac Efron and tries to re-create himself by returning to 12th grade (with his own teenage kids, actually) and trying to be cool. Lessons are learned, rabid fans of High School Musical are temporarily mollified.102 minutes PG-13.