Pop Crunch has a great list up. It's more like the most disturbing books written in the 20th Century, but still quite intriguing.
I read The Turner Diaries in college after the Oklahoma City bombing.
William Burroughs' Naked Lunch is already on my short list of upcoming reads.
Blindness by Jose Saramago looks interesting, so I've ordered it.
And my wife has already recommended Cormac McCarthy's The Road to me.
What have you read that's on the list?