9. The Descent (2005)
Years before he redefined TV action with his work on Game of Thrones, British director Neil Marshall earned his place in the horror pantheon with this merciless survival-horror story. One year after a car accident shatters their bonds, a group of women go spelunking in a remote Appalachian cavern and unearth far more than they bargained for. The claustrophobic setting is intense and the creature effects genuinely disturbing, but the film’s greatness lies in its use of its main character’s raw, red grief as emotional kindling for the catastrophe that follows. Few of even the greatest genre movies dare to go places this deep.
Alongside a murderers’ row of critics, I wrote about some of the best horror films of the new millennium for Rolling Stone. (For the record, I was on the “Mulholland Drive IS a horror movie” side of the argument referenced in the intro.)
Full list: http://www.rollingstone.com/movies/lists/50-greatest-horror-movies-of-the-21st-century-w441469/