10. Rage Against The Machine

Maybe the most likely on our list to reunite, RATM got back together briefly as a fiery headliner at the Rock The Bells festival, causing roughly 80,000 fans to do their best impression of “Bulls on Parade,” rushing the stage as they began their show. While they’re sadly back on hiatus, their recent performances only make us wish they’d get back together sooner. After all, there’s still plenty of machine left to rage against.