Ni9e - Graffiti Art

This is some of the most interesting graffiti/public art I've seen in a while. The website it Ni9e and it takes graffiti to the level of art with diligent documentation and study.

The first place to start is their written analysis of graffiti. It's 30 pages complete with work cited! You will definitely become an expert in public art when you are done reading this. (this is a 6mb pdf, so give it a second to load up)
Next go here to a brilliant gesture study video of the act of graffiti.

And of course you need to be very understanding of your graffiti taxonomy to truly understand what you are looking at.

Then move on to this video of LED throwies; more genius thought.

Ni9e also has a few other interesting sticker projects they document by video if you search through the projects bar at the top left.