It is incredible how far Shepar Fairey has come, especially in recent months with is Obama artwork, which also ended up taking over the covers of Time Magazine and Esquire. This past week the artist was a guest on The Colbert Report and they talked about how the poster came about. Check it out.
Shepard Fairey is a great graphic designer, but I doubt his artist integrity, because hes just making images to promote himself (or obey) as a brand