Well, I'm not a big fan of of the kind of metal ya'll have been posting, but it's a big and varied genre. My favorite band that falls under the metal umbrella is Goblin Cock, although I believe it would be categorized as "Sludge".
And here's a beauty from Tomahawk, a Mike Patton/Melvins/JesusLizards supergroup sideproject thing.
Does Ministry count? Blood Brothers? If they don't... I guess I can just listen to Mississippi Queen on repeat.