For the last Super Bowl, Nabisco hired the Brooklyn-based artist Alexander Barrett and other artists to make sculptures out of Oreo cookies. Their subject matter was chosen by people following the Oreo brand on Instagram. They sent in photos to duplicate with Oreo cookies. You can see more sculptures in the series at the link.
UPDATE 7.14.13: Chris Durso of Foodiggity kindly emails to inform us that these are works of several artists, not just Alexander Barrett. I've altered the post to reflect this information.