Jah! Jah! Cthulu Ftagn!!! I shall sacrifice your soul to Nyarlathotep!!
Oh, don't mind me. I just thought i was the only one who might have known about H.P. Lovecraft. Me and my stepdad have maybe 45 books from him..
Other than that, Poppy Z. Brite has some very disturbing, descriptive, yet captivating books.
L.E. Modesitt has a lovely series called "The world of Recluce" about 13 books in it so far, and they get better every time (bout 500-600 pages apiece, i love em!)
Clive Barker's "Books of Blood" Lovely stories, I must say....
I have to admit, I like harry potter.... good writer, too kiddy of a plot, she should go into horror or extreme fantasy novels.
OMG, I almost fogot! The DUNE series by Frank Herbert! That would be my most favortie book series. They are a little confusing at first, but they are excellent reads!