Try The Cramps, Danzig (alone or with the Misfits) Alice Cooper (a really obvious choice), The Toyes' "Monster Hash" is a gas, also Warren Zevon has a few rather disturbing numbers lyrically speaking... CCR "Graveyard Train, Bad Noon Rising, and Tomstone Shadow"... Savoy Brown's "Hellbound Train". And if you can find it, the creepiest song ever recorded, "DOA" by Bloodrock. It was actually a Top 40 single.
You can live in staunch denile and mark me as your enemy, but I'm just a voice among the throng who want a brighter destiny, and say with me, "We are the New America!" -Greg Graffin