Any movie with Jennifer (Aniston, Love-Hewitt) in it comes pretty close....
Silent Hill scared the crap out of me, but that was probably because I was home by myself (which never happens) I had all the lights turned off, and was watching that movie. Then there is the old stand by, Nightmare on Elm St., which still gives me the creeps when I watch it, but then again I was way little as a kid when I first saw it. And, I do love the old monster movies, some of them didn't really scare me but got me thinking WHAT IF? Like: Day of the Animals (all the animals go nuts and start attacking humans) THEM! (giant ants) Ants! (little poisonous ants) and that spider movie that wasn't really good, and I can't remember the name of it, but hundreds of normal sized trantulas were making hills and eating people. Then of course, who isn't scared when they see Arachnaphobia? I don't even go into our garage because of that movie (and, there are LOTS of spiders in the garage, it needs to be fumigated).
But as for true, deep down, scare: Cape Fear takes the cake. DeNiro was so convincingly scary in that movie it left an impression on me. And not one I liked, either. That was the first and last time I ever watched that movie.---I never saw the original and likely I will not see the original because the remake was bad enough. I did not like it, not at ALL.
PS: And Night of the Living Dead, original in black and white. Now, there is nothing like zombies and blood in black and white, it has a special kind of scary.
The Others was scary, especially when you did not know what was really going on, but as for leaving a lasting impression of scary, no, because you find out what is going on at the end, and its sad but beautiful in a way. And then, there is that part where the little girl looks old and she says "I am your duaghter" First time I saw that, I nearly peed myself.