For US, i like Zombieland & Slither. Tales From the Crypt/Darkside
Hong Kong
Mr. Vampire - one of my favs, great horror/comedy/kung fu w/ hopping vampires
Spooky Encounter of the Third Kind - Sammo really shines w/ in this supernatural fu fest.
Japanese
One Cut of the Dead - This was genuinely an awesome movie. I dont want to spoil it so just watch it. Such a feel good funny movie!
Drag Me to Hell is good
Murder Party, as previously discussed
Ready or Not