This documentary from IFC is a very good over view of Hong Kong martial arts cinema, unfortunately its much too short to really give you anything but a taste of the wonders of the genre. Don't get me wrong this is very good,and you should see it, you'll just find the end credits rolling wanting to know and see more, more on the history of the genre and more of the films.
Ultimately its a quibble and more than likely you'll find yourself surfing the web to find copies of some the films shown, although I do warn anyone searching for some of the titles, many are on cheap knock off dvds and do not look nearly as good as the prints shown here.
A very good, if brief look at a cinema long in need of a proper overview.
8 out of 10
(You may want to try and find Cinema of Vengeance a 1994 documentary which is more detailed and compliments this film nicely)