Fantastic as a "artist" taking on real issues and not just for cash, think he'll go down in history! if he hasn't already, lovin the monkey watching monkey porn!
I've got his book Wall and Piece - its a great book.
Some of the stuff he does is very amusing and thought provoking - apparently his talent level isn't classed as massivly high but I think he's very good.
Anyone who thinks graffiti is just crime and can be nothing more should look at some of his work. He has made more poignant political/social statements than most other modern 'artists' I can think of.
