5. OLD BOY (2003)

If this internationally heralded film taught us anything, it's this: In life, anything can happen. After a drunken night on the town, Oh Dae-su (the venerable Choi Min-sik) finds himself locked up in a motel room for 15 years, where he's served nothing but fried dumplings.

If that doesn’t sound torturous, he then gets released, and has no choice but to accept a ludicrous challenge offered by the mastermind (Yu Ji-tae) behind his imprisonment.

With only five days on his clock to save a sushi chef he recently met, Dae-su goes on a rampage. He eats a live octopus, loses a friend, engages in an incestuous intercourse, and eventually loses his tongue. Some guys have all the luck.