Chris Howard, Fantasy, Science Fiction Author and Illustrator, had a QR Code project for GBeCS–where his kids go to school. It involved dropping the school logo into the center of the code and a bit of recoloring while maintaining enough of the code to be read. From there he started goofing with his own QR code that will take viewers to SaltwaterWitch.com (those with smart phones and a QR code reader app, which means just about everyone, right?).
A GREAT example of an artistic and functional QR code! Check out his blog for some fantsastic fantasy artwork!
Source: Chris Howard