In case you’ve been hiding under a rock, Green Day’s American Idiot is headed for a big Broadway opening (April 20), the latest in a series of musicals set to a rock-and-roll beat. Watching the welcome sight of youthful crowds rushing in to the St. James Theatre, we couldn’t help wondering: Which rock musical is your favorite of all time? Our poll doesn’t include “jukebox” musicals such as Rock of Ages and Jersey Boys—we narrowed the choices to tuners with rockin' original scores or those built around concept albums. Get your iPod speakers blasting, and cast your vote now!