I owned this album in High School, but got rid of it because it was scaring me too much (I was going through a super-religious phase at the time). I picked up a copy at a garage sale a few years ago and just recently uploaded it to Play Music so I could listen to it on my phone.
Tonight I figured it would make an interesting soundtrack for grading, but I'd forgotten how absolutely terrifying it is. It's a guided tour through madness and self-destruction, with a wonderful side trip to literal hell.
Thanks for the nightmare, Trent Reznor.