I really like Hellraiser, eben though I only saw the first one. I thought the designs of the demon people were cool
Other than that... I can't really think of alot that stick out in my mind. I like 28 Days/Weeks Later, Saw, The Shining, The Ring and some others. I'm sure there are others, but I'm not too sure of their names. My friend is a really big Dario Argento/classic Hollywood monster movies fan, and I've liked a few of them.
To be honest, the only Asian horror flick I've seen that I thought was scary was the Ring, and the one Takashi Miike movie I saw (Audition). Everything else was meh. I thought the American remake of the Ring was scary too, but that's maybe because I saw it first.