My nephew has been painting with spray paint. It's not graffiti. It's art. It's not on the sides of buildings. It's on canvas. And it is truly some incredible work.
He calls them sprayntings. He occasionally mixes mediums but the foundation is always spray paint. A local art gallery has several on display. He sold two in his first week.
This one is my current favourite - Celestial Waterfall
To see more, go to http://sprayntingsbymikal.wordpress.com/