Cracked has an interesting list of the “5 Greatest Books With Psychotic Fan Bases.” I had no idea that the Tolkien books were big with Neo Nazis. Kinda weird since Tolkien was kind of a hippie and was using it, partly, as a metaphor for the harmful effects of industry on nature.
Also, no Ayn Rand on the list. That surprised me a little. Anyway, check it out, it might surprise you.