Actor and Tenacious D frontman Jack Black knows a thing or two about metal and he's here with YouTube channel
Good Mythical MORE to discuss the genre, specifically its album covers. Black looks at covers from Amon Amarth, Dio, Iron Maiden, Molly Hatchet, Manowar and Wretched to determine what the most metal one is from the selection.
If you're into spoilers, he's a big fan of Dio's Holy Diver, though Wretched's Cannibal throws him for a loop. Speaking of metal, Tenacious D will release Post-Apocalypto on November 2.