Does anyone know any really scary movies?

I don't want one that's just gory and disgusting or something, something that's actually scary. I thought The Exorcist (the original) was kind of boring. I didn't think The Shining was that good either, I thought the book better. I want to see Ju-on but it's not on Netflix instant streaming and I want to watch one tonight. I also saw A Tale of Two Sisters, The Sixth Sense, The Messengers, Session 9, Phone, Dead End, It, Shutter, Paranormal Activity, The Fourth Kind, and Candyman. I was thinking of watching Pulse (the Japanese one). And is Saw scary? Suggestions are welcome.