1. Let the Right One In (2008)
No horror film post-2000 stirred us up in as many ways as Let the Right One In, adapted from John Ajvide Lindqvist's superb novel of the same name. Tomas Alfredson - who as a result of the film's success also found huge acclaim when he directed the thrilling Hollywood pic Tinker, Tailor, Soldier, Spy - delivers a majestic, chilly Swedish horror film unlikely anything you have ever seen; moody, creepy, but also boasting strong characterisation that helps make it surprisingly affecting, this is a horror film that delivers on every front possible. After the hormonal excess of the Twilight series, it's a great palate cleanser; serious, emotional, but not afraid to lop a few body parts off when the time calls for it. Packed with the sort of things you'd never get to see in a Hollywood horror - but we won't tell you what these are - it's simply a breath of fresh air; we observe the burgeoning relationship between two youngsters against the foreground of the fact that, well, she's a vampire, and this has even wide implications than you're likely to expect. The cinematography, sound design, and perhaps most crucially, the two central performances, are all sublime, making the film a sure horror classic and easily one of the best ever made. Are there any other modern classics we missed? Let us know in the comments below.