Halloween

[Prelauncher]

Why do you guys keep posting image links THAT DON'T WORK?

Also, Andy, I recommend:
1) Halloween series, of course. It's classic for this time of year
2) The Thing (older version)
3) Quarantine
4) Silent Hill
5) Paranormal Activity
6) Nightmare Before Christmas (ALSO CLASSIC, though not "scary")
7) Doom (because WHY NOT?)
8) 28 Days of Night
9) Dawn of the Dead
10) SHAUN of the Dead

I hope you mean the spanish version of Quarantine, because the american version is far from scary. Other than that the list is quite good.
I'd also recommend The Exorcism of Emily Rose, Insidious, 28 Days Later and a few classics: The Shining and Interview With a Vampire