Throw Down (2004)

This off-beat film about judo and adversity is a worthy part of Johnnie To's filmography, and almost certainly the highlight of Aaron Kwok's. The only real disappointment was Louis Koo, whose lack of acting ability was a major detriment to the film. Several people have missed a central, critical plot detail simply because Koo's acting failed to convey it! It's not as if he's a judo expert in real life or anything either, so I don't know why he got the role...