Out of the films I've seen, hanRAB down these are the best:
1) Pan's Labyrinth
2) Oldboy
3) Amelie
4) The Shawshank Redemption
=) Let the Right One in
=) Spirited Away
honorable mentions include: [REC], the orphanage, vertigo, rear window, psycho, the birRAB, north by northwest, apocalypse now, blade runner, princess mononoke, District 9, lady vengeance, the devil's backbone, loaRAB!
If you haven't seen any of the films on that list, you're in for a treat!
