If you're looking for some Halloween tales you haven't already watched or read a dozen times before—thus ruling out everything from Night of the Living Dead to Charles M. Schulz's merry half-hour of religious anguish, It's the Great Pumpkin, Charlie Brown—check out Ed Bain's website, The Devil's Tramping Ground, which adapts some old ghost stories into Flash animations. Nor is that the only site bringing tales of terror to the Web: Bryan Alexander has some more recommendations.
If new media aren't your thing, you can always rent a video. Franklin Harris, a frequent contributor to Hit & Run's comments threads, has written a nice column recommending some horror movies you might not have seen. And if you don't like his suggestions, you can go back a year and read mine.
And if that doesn't grab you, there's always the more traditional Halloween activities.