Quote Originally Posted by Azar With A Hat
I've never seen it, or heard of it, until now. Details?
Description: Oh Dae-su is an ordinary Seoul businessman with a wife and little daughter who, after a drunken night on the town, is abducted and locked up in a strange, private prison. No one will tell him why he's there and who his jailer is and his fury builds to a single-minded focus of revenge. 15 years later, he is unexpectedly freed, given a new suit, a cell-phone and 5 days to discover the mysterious enemy who had him imprisoned. Seeking vengeance on all those involved, he soon finds that his enemy's tortures are just beginning.

It's a wild movie, and it won the Grand Jury Prize at the Cannes film festival a few years ago. I definitey recommend you watch it.