The movie does look really nice, except I think this movie would work better if the spoken language was japanese. I certainly have a problem with these kind of movies being spoken in english.
Also why do I get the feeling that every major movie about the Asian culture (that gets a big response in US) etc. has Zhang Ziyi casted in them.
(Crouching Tiger, Hidden Dragon, Hero, House of Flying Daggers, Memoirs of a Geisha...)