I don't know how you feel about subtitles and foreign movies, so I'll try to recommend as much as I can from all the subgenres I enjoy. Hailinel has already mentioned a lot of highly-regarded Asian horror movies (though I found both Marebito and Noroi very boring, even though I love slow burning Asian horror), but unfortunately I don't have much information on pretty much any of the foreign horror listed on Netflix (have yet to get to them myself). I will vouch personally for Grave Encounters 2. It is worse than the original, but I still found it very compelling. Re-animator is incredible if you haven't seen it, though it has aged considerably. Pulse (the Japanese original, not the godawful remake) is relatively creepy, but it is one of the slowest burns I have ever seen. For the most part Netflix has a pretty shitty horror collection, unless you're coming in to watch funny and terribly bad B movies (which is great from time to time). But it has Antichrist, which is fucked up and should be watched.
If you have yet to see American Horror story, do so. It is on Amazon and Netflix both. That's about it for Amazon, as their layout is so shitty its not very enjoyable to go digging for movies. If you decide to watch some movies online or acquire some stuff to watch, I reccommend Shutter (the Thai original, please god not the remake), The Strangers (one of the best modern horror movies to come out of the west), and Insidious. The Exorcist is available to stream through one of the two and its GREAT.
And I hope you like shit, because Poultrygeist, Dark Watch, and Tales From the Hood are that x10.