#93 at time of writing.
This film has little hooks and surprises around every corner, so much so that I hesitate to say anything about it for fear of ruining the surprise. Suffice to say, it is dark, stylish, violent, bizarre, and very very cool. Min-Sik Choi's performance in the lead role is particularly memorable.
The story kicks off with a man being kidnapped out of the blue and locked in a small room by his mysterious captor. For 15 years. The core question (which is right there on the poster, if you can read Korean) is WHY? A thoroughly compelling question if you ask me.
I'm not sure I've seen any other Korean films. The style reminded me of Japanese horror movies I've seen, but with a much more satisfyingly cohesive story. In fact, the story is based on a Japanese manga, which you can read online here.
This is the second installment of director Chan-wook Park's Revenge trilogy; I'd be interested to see the other two, Sympathy for Mr. Vengeance and Lady Vengeance.