I think you have to take this film with a grain of salt. It was Chan's first English-language film in over ten years and, according to rumors, it was more of a test for New Line to see if Chan could handle speaking in English for an entire film. As such, not much attention was paid to the story (it's more of a rehash of Rumble in the Bronx than anything else), and most of the action pieces in the film are recycled from previous Chan movies (the mall fight from Police Story, the construction brawl from Police Story 2, etc.).

All that being said, the film is fairly entertaining if you don't go in expecting too much. The action (as could be expected under Hung's direction) is done well and some of the jokes are actually pretty funny (Hung is hilarious in a cameo as a beat-up bike messenger). There are a few sticky points, though. Once again (as in Operation Condor) Chan has three ditzy female sidekicks dragging on him (and the story) for much of the film, and Richard Norton (a good fighter you might know from the China O'Brien films or another Chan movie City Hunter) is absolutely wasted in his role as the villain; we don't even get to see a decent fight between him and Chan (apparently, Chan hurt himself and could not film a big fight sequence).

Mr. Nice Guy, like many Chan films, also suffers from what I like to call a "Warner Bros. ending," named after those Bugs Bunny cartoons where the creators don't know how to finish the cartoon, so they just have Bugs break into a song-and-dance, crack a lame joke or other such nonsense. The ending here seems to be really tacked on and weak. The story is literally wrapped up in about two minutes. I won't ruin it for you, but I think once you see it, you'll be scratching your head, thinking "That's it?" Yup. That's all folks.