What are some cool movies?

What are some great movies under these categories:
Horror
Comedy
Action/Adventure

NO SCIFIS!

Hmm, those are the exact types of movies I like, so here are a few of my pics:
Pirates of the Carribbean 1
Pirates of the Carribbean 2 ( my all time fav)
Man on Fire
Scary movie 3
Scary movie 4
Amityville Horror
The Exorcist
An American Werewolf in London
The Grudge
King Kong ( the new one)
Spider Man 1
Spider Man 2
Silence of the Lamb
The Shining
Miami Vice
Epic Movie
Shrek 1
Shrek 2 (lol)
The Hot Chick
Van Helsing ( F**king awesome)
Ghost Ship
What Lies Beneath
Poseidon
The Hills have Eyes
Saw 1
Saw 2
The Exorcism of Emily Rose

Check out 'Reindeer Games' - pay careful attention - you'll be very surprised at the ending !

wrong turn
hitcher
wolf creek

Check out saw 3 if you have a stomach :P comedy id say severence its a horror too
pacman x