The way he painted immediately turned me into a fan. It's just amazing how when he paints these things come naturally. His additive and subtractive methods are what amazed me the most.
More amazingly, though, while I was in New York on the weekend for my independent research, I ran into him painting on the streets of Times Square!! I'll make sure I bring in the painting I bought from him on Monday if you guys want to see (and smell) it. Smells like fresh spray paint! :)