Originally Posted by The Second
Also one of the shorts at the end of Gyo, I think it was titled Holes or something similar.
The Enigma of Amigara Fault. Awesome story. Ito's "Uzumaki" is also worth a read. I do love Romero's zombie films, but not because of the on-screen gore. The appeal is in imagining yourself in those situations, dealing with the characters you see. It's all well and good to say you'd know what to do in a zombie apocalypse, but would you really? How would you REALLY react to the dead rising? His films are not about the zombies, but about the survivors, which is where a lot of other Z films kinda fail.
But literature-wise, of course Lovecraft and House of Leaves. Clive Barker as well...check out Mister B. Gone (to be fair, I'd call most of Barker's work dark fantasy rather than horror). Insidious book if ever there was one. Arthur Machen is pretty creepy too, and Thomas Ligotti.