Artist David Hockney isn't afraid of picking up new media -- over the years, he's used Polaroids, photocollages, and even fax machines to create his art -- in addition to regular, old-fashioned painting. Now, he's taken to using his iPhone to create new works of art. The resultant "paintings" have been exhibited at the Tate Gallery and Royal Academy in London, as well as galleries in Los Angeles and Germany. Like artist Jorge Colombo (whose iPhone fingerpainting was featured on the cover of The New Yorker), H
