I posted this in the most recent movie thread we had. Try out the Swedish versions of the Stieg Larsson Millennium Trilogy, "The Girl with the Dragon Tattoo, The Girl Who Played With Fire, The Girl Who Kicked the Hornet's Nest". I enjoyed them all.
Pi is a realllyyyyy strange movie. I watched it years ago, when I was much younger, so I may have a different perspective now-a-days.
Some other suggestions:
Seven Samurai (really long)
Spirited Away (it's a cartoon, but it's extremely well done)
M (tension, suspense, horror)
Check 'em out! Seriously, do it.