Noon to 2 PM: The Thing
Start with a strong one. Great plot, and the special effects are fantastic, more than 25 years later.
2 PM to 4 PM: Seven
Slightly more realistic, but no less disturbing. Fantastic final scene.
4 PM to 5:30 PM: The Blair Witch Project
You'll want this one early on, it's not high energy enough for later on. Still fantastic though.
5:30 PM to 7:30 PM: 28 Days Later
One of two offbeat British zombie movies I've selected. This one is serious. Seriously awesome.
7:30 PM to 9:30 PM: Psycho
Despite the twists being so well known, it's still astonishingly tense.
9:30 PM to 11:30 PM: Scream
Lighten things up a little. Great meta-slasher movie.
11:30 PM to 1:30 AM: The Exorcist
This will horrify all the Catholics, but make everyone else laugh.
1:30 AM to 4 AM: The Shining
Everyone, regardless of faith, should lose sleep over this one.
4 AM to 5:30 AM: Evil Dead 2
At this hour, and after the last two, you'll want to up the energy level. None better for it than Evil Dead 2.
5:30 AM to 7 AM: A Nightmare on Elm Street
A little surreal, which works when you've been awake this long.
7 AM to 9 AM: The Passion of the Christ
It's basically a horror movie anyways.
9 AM to 10:30 AM: Shaun of the Dead
The second Brit zombie flick. This one is horror-comedy, it'll wake you up.
10:30 AM to 12 PM: Halloween
The original, and best slasher movie. And a great film to close on.