Everyone is talking about the Shepard Fairey (OBEY) Obama posters. Shepard did an initial run of 350 screened posters and put them up for sale to fund a larger street campaign. The prints sold out in 15 minutes. Obama wrote Shepard to thank him for his support and asked him to do a poster illustration to sell on his website.
Fairey is interviewed about it here.
Regardless of what your think of Obama, our blog posting is about the design of this poster series that has gone on to become a hugely popular style.