http://www.amazon.com/The-Contract/dp/B000I8HD7C
http://www.amazon.com/Best-Martial-Arts ... 000I8G02G/ (a personal fave!)
http://www.amazon.com/Operation-Scorpio/dp/B000I8G012
http://www.amazon.com/Line-Duty-4/dp/B000I8JAHS
http://www.amazon.com/Legend-7-Golden-V ... B000TA4V06
....and noticed that Amazon has a whole bunch of Hong Kong movies through their Unbox service. These seem to only be available to U.S. based PC customers right now (rules me out on both counts!

Most of the better titles are via Fox/Fortune Star with the rest provided by far too many lesser known U.S. PD companies. Most of the Fortune Stars are fairly well known, but if you're already a user, or new to HK cinema, there's a few gems in there that might be worth a shot, at least at the rental price of $1.99 - $3.99.
INTERNATIONAL FILMS (seems to be the best way to see the non-PD stuff)
http://www.amazon.com/s/ref=sr_nr_n_6/1 ... 3A44065011