Pure Hate Berlin 2004 is a great film of graffiti from Berlin, Germany. The DVD, which came out four years ago and is hard to find (not sure if Amoeba has it in stock but you should ask to be sure) has some really well-produced footage (lots of killer post production work) with a perfect soundtrack to match the imagery as you can see from the video excerpt above.
I find the clip above to be so intense because of the ninja-like team work of the dozen or more all-masked graf artists descending in the dead of the night on the abandoned Berlin train platform to carry out their obviously pre-planned, choreographed art crime. And the new Pure Hate Berlin 2008 looks like it will be even tighter in terms of production, visuals, and content. See another movie excerpt clip below.