One of the most under-served communities in music is the metal community. It's not bad enough we can't get the Grammy's to notice rock bands for rock categories, but xmas music is slim pickens in the genre. Sure, there's a handful of rock and metal christmas albums here and there, but for the most part, not enough to fill a day of holiday radio. But things are looking up. Take for instance, this little beaut from Jack Black. It might be just what rock radio is waiting for.