Some with interesting story:
Wild Things (pretty wild
)
Sleepover Camp (Kind of old horror movie. not rly scary but one of the most shocking endings in a movie ever)
Some non-english awesome movies:
Nightwatch (Russian movie, shit is awesome)
Daywatch (^)
Pan's Labyrinth (pretty awesome movie, It's spanish if I remember correctly.)
The Orphanage (Same director as Pan's Labyrinth, also in spanish. Really fucking cool movie)
Spirited Away (Japanese animated movie)
Paprika (Japanese animated movie)
I can list more later if you want. But now I'm going skating