Wolves in the Throne Room
You're at home listening to your new outrageous indie rock CD when your Mom comes home and catches you. It turns out she has the same CD. In the car. She and her friends listen to it, your Dad likes it, even your grandfather thinks it's OK, because indie rock is the same crap they've made since 1952 or so, just with more wailing and self-pity (and minor chords). So you storm out of the house thinking, "I'll show them!" You go to the record store and decide to skip past all the music for healthy people, you'll get metal. And then you find Wolves in the Throne Room. It's like that outrageous metal, but it's safe. It contains safe moral opinions that people at your church and Democratic fund raiser would agree with. It's basically indie rock, but they play it like it was black metal. And it's totally boring, so you can have it droning in the background while you wonder if anyone ever anywhere has suffered as much as you have.
You can find the rest at http://www.anus.com/metal/about/metal/hate/ some of them are way way off e.g. pantera and cannibal corpse but pretty lulzy nonetheless