OH, THE HORROR...
"Horror is not a genre, like the mystery or science fiction or the western. It is not a kind of fiction, meant to be confined to the ghetto of a special shelf in libraries or bookstores. Horror is an emotion."
"Horror is that which cannot be made safe -- evolving, ever-changing -- because it is about our relentless need to confront the unknown, the unknowable, and the emotion we experience when in its thrall."
"Horror fiction upsets apple carts, burns old buildings, and stampedes the horses; it questions and yearns for answers, and it takes nothing for granted. It's not safe, and it probably rots your teeth, too. Horror fiction can be a guide through a nightmare world, entered freely and by the reader's own will. And since horror can be many, many things and go in many, many directions, that guided nightmare ride can shock, educate, illuminate, threaten, shriek, and whisper before it lets the readers loose."
Apocalypse - The Stand by Stephen King
Cosmic Horror - The New Annotated H.P. Lovecraft by H.P. Lovecraft
Dark Fantasy - The Darkest Part of the Woods by Ramsey Campbell
Demonic Possession/Invasion - The Exorcist by William Peter Blatty
Ghosts - The Lovely Bones by Alice Sebold
Haunted Houses - The Haunting of Hill House by Shirley Jackson
Monsters - Relic by Douglas Preston and Lincoln Child
Psychological Horror/Serial Killer - The Silence of the Lambs by Thomas Harris
Splatterpunk - Books of Blood by Clive Barker
Vampires - Dracula by Bram Stoker
Witchcraft - The Witching Hour by Anne Rice
Zombies - Zombies: the Recent Dead by Brian Keene