Hum, I suggest that you actually buy the DVD, it's not too expensive and they sure deserve it. Of course there are places where you can download it from, they are quite easy to find.
As you may know, the movie was screened on just a few theaters around the world (mainly USA) because they don't have a big label behind it and, of course, it's a very specific subject... bboying. So, They actually have to make money and pay the rent with the DVD sales.
The Korean crews featured in the documentary are Gamblerz (they were there to defend their title as they were the champions from the year before) and Last for One.
I think the DVD was.... O.K. Of course, something that I paid a lot of attention to was... the Korean Language and how they practice (for example from midnight till 5 am ahahha ).
To me, a way more interesting DVD was "Inside the Circle". This DVD has nothing to do with Korean or Korea for that matter but, if you are interested in bboying that's a really good one. I highly recommend it.
Links:
http://www.insidethecircle.com
http://www.planetbboy.com
Dance for life!