For Tenacious D, self-proclaimed Greatest Band in the World, rock 'n' roll satire comes as naturally as breathing. Launched in the mid-'90s by Kyle Gass and Jack Black, the group spoof rock's massive riffs and flamboyant posturing via over-the-top storytelling (the majestic, acoustic-driven "Tribute") and acrobatic vocals (the dramatic “Wonderboy”). Still, when the duo link up with famous rocker friends, their tongue-in-cheek approach has serious bite. Meat Loaf and the late Ronnie James Dio add vocal melodrama to "Kickapoo", while Dave Grohl's unmistakable metal growl propels hard-rock opus "Beelzeboss (The Final Showdown)".