Call me crazy, but this Zac Efron fellow might have a future. The High School Musical star impressed in Hairspray, and now he gets to headline in 17 Again. Yes, it’s another one of those “man gets a chance to be young again” films, and yes, much of it feels like recycled sitcom pap. Fortunately, Efron anchors the film with a winning, charming performance that has me looking forward to his future film roles, and hoping good directors give him chances to make some quality work. He plays a grown man who becomes young again; the older version of him is played by Matthew Perry, whom Efron does a fine job of mimicking. It’s dopey as all heck, but Efron makes it more than tolerable.