When I was little and alone (everyone asleep napping) in my house I watched this movie called "The Gate" and it freaked me out so badly.
LOL I was just thinking about that movie before I scrolled down and saw your post. It seemed so scary to me too when I was little. Here are my faves:
~~The Exorcist (one of my favorite movies of any genre)
~~The last house on the left (remake, INTENSE, brutal and realistic)
~~Hellraiser (The first one. It was so scary when I was little. I still think it's really good. There is something evil and slimy about it that stays with you)
~~Martyrs (This movie was so brutal and horrifying I never could watch it again-that says it all because I'm not too sensitive. I don't regret watching it once though... it was a mindfuck)
~~Event Horizon (Yes! Awesome awesome Awesome)
~~The Blair Witch Project (Why do so many people dislike this movie? This is another one of my all time favorite movies. I love the way its filmed and the acting. I also love anything having to do with being lost in the woods. Such a nightmare)
~~The Hills Have Eyes (This movie was scary as fuck! Felt real. Nightmarish. They did a good job remaking this, I saw it three times at the theater, lol)
~~Wrong Turn (lol, not really scary but I love this movie for some reason. Cheesy and predictable but I truly enjoyed the adventure. Maybe it's just because Eliza Dushku (sp??) is so hot)