Friday The 13th - Part 4 (one of my favorite horror films of all time)
Halloween - original followed closely by Zombies remake.
A Nightmare On Elm Street- original followed by part 3
Saw - First, hate the rest.
Scream - First, followed by part 4
The Texas Chainsaw Massacre - Original by a mile
Alien - first, not a huge fan of Aliens
Predator - first but I also LOVE part 2
Phantasm - first, followed by part 2. Don't really care for the rest.
Evil Dead - first
Hellraiser - Part 2 then part 1. Don't care for the rest
Child's Play - Part 1
Final Destination - Part 1 followed by part 5