What are the scariest movies you've watched? #movies

These are my favorites:

1. The Grudge
2. The Ring
3. The Others
4. Insidious
5. Sinister

I've always like The Exorcist (1973) with Linda Blair.

The two scariest movies ive ever seen in their entirety (that will probably annoy more seasoned movie critics here) are the Texas Chainsaw Massacre of 2003 and Amityville Horror of 2005.

The Texas Chainsaw Massacre scared me because it never lets up. Most horror movies give you a few moments to allow you to care about the characters, give you back-story and build tension, TCM just made you feel like you and everyone in the movie was going to die for the entirety of the movie, especially when you realize that the whole 'village' is in on it.

The Amityville Horror scared me because I grew up in an old house in a small(ish) town and the fact that more or less, this is based on a true (honestly, a quick google search will show you that it actually happened, though not quite as agrandized as the hollywood version) story and could have happened to anyone. Also, the end is perfect for a movie as scary as it is.

The Decent - Claustrophobic cave monsters.
A Tale of Two Sisters - Best Asian style horror.
Noroi: The Curse - Mockumentary about a curse which becomes terrifying.
Session 9 - Abandoned mental asylum ghosts.
Eraserhead - David Lynch makes scenes that are terrifying.
Saw - First one is genuinely scary, thrilling, and near perfect imo.
Seven - Best serial killer movie ever made.
The Exorcism of Emily Rose - Great hybrid paranormal horror/court drama. Gets crazier when you know that no CGI is used when Emily Rose is contorting her face/body and freaking the hell out and Jennifer Carpenter is just that good of an actress.

John Carpenter's The Thing (1982) ... my favorite scary alien movie of all time! 

Movies that genuinely creeped me out:

1. Haunting in Connecticut
2. Blair Witch
3. What Lies Beneath
4. Final Episode of Twin Peaks

I love some good horror films:

The Strangers. The Devil's Rejects. The Shining. The Mist. Silence of the Lambs. The Sixth Sense. The Descent. 1408. Signs. The Crazies (2010). The Hills Have Eyes (2006). 28 Days/Weeks Later. Dawn of the Dead (2004). Texas Chainsaw Massacre 1 and 2. The Others. [Rec]. Let the Right One in/Let Me in (both versions were good). Hostel. Saw. 30 Days of Night. Martyrs. Wolf Creek. Trick r Treat. The Midnight Meat Train. Blair Witch. Frailty. Mirrors.

I like The Woman In Black. It's got really great atmosphere, a solid ghost story, and some decent scares. Also, Daniel Radcliffe was actually pretty good in a role not as Harry Potter.