If you liked Crouching Tiger Hidden Dragon then you'll love this.
Similar outrageously balletic/flying fight scenes, and with real artistry in the cinematography. Still pictures from the coloured themes for each major scene can, and have, been exhibited in art galleries.
Jet Li gives a restrained but powerful performance as "No Name", keeping true to the pace and style of the movie, but all the actors give outstanding performances.
Moments of extreme peace are shattered by moments of extreme violence, but all played out with a poetic grace and visual purity that belies the violence, turning it into a kind of Greek Tragedy (including the Chorus).
This isn't a Fast-Paced-All-Action-Thrilla-Ain'tNinjasKewl-IWishIWasASamurai movie, but a thoughtful story of revenge, loss and sacrifice.
Oh - it also has the Drop Dead Gorgeous Zhang Ziyi, and beautiful Maggie Cheung in it too.