I assume most people over 26 have seen this movie. But if you haven't here are some reasons why you ought to.
1. Visual effects.
2. Musical score.
3. Beautiful characters.
4. Lovely plot.
5. Incredible fight scenes. This wasn't the first movie to show people floating over rooftops, but it was ground breaking in the US, much to the same visual way that The Matrix was.
Just remember that when you rent it, be sure to watch it with subtitles in the original Mandarin! (I believe it's Mandarin. I forget.) For the love of Pete! The English-speaking actors who dub their voices do nothing for the movie.