What parts of this movie were good?

The movie as a whole has little use for plot specifics and character development. The plot keeps moving, and there are a few resonant character details, but ultimately these things were not considered important by the director.

Instead, Myung-se Lee focused on crafting a film filled with memorable and technically virtuosic action and chase sequences. There are few special effects, but the camera work is amazing, and the editing style is unlike anything I have ever seen before anywhere. It's sort of like Wong Kar-Wai in Chungking Express, but instead of focusing on emotion and moments in time in a relationship, Lee focuses on movement and moments in time in the midst of an action.

The best two scenes are probably the 40 steps murder scene at the beginning, with the BeeGee's "Holiday" playing in the background--one of the most beautiful and haunting scenes I've seen anywhere--and the final fistfight in the rain between the main cop (Woo) and the villain he's been chasing the entire movie. These scenes are unique and visually spectacular, and the movie is worth seeing just for them alone. But I think there are several other great scenes as well, such as when Woo gets in a fight on a rooftop that turns into a dance and then a battle of shadows.

I also thought there were several great lines in the movie, though my version was really poorly subtitled--sentences were often ungrammatical, and a few made no sense whatsoever. My favorite: "Judgments are made by judges. Lawyers make the excuses. Ministers do the forgiving. Detectives do the catching, whatever it takes."

Hope that helps.