Geoffrey McGann, a southern California artist, was arrested at Oakland airport for wearing an assemblage sculpture/watch he'd made. The TSA were also worried because he had a lot of insoles in his shoes. He was eventually released on $150,000 bail.

OAKLAND, Calif. -- A Southern California man was arrested at Oakland International Airport after security officers found him wearing an unusual watch they said could be used to make a timing device for a bomb, authorities said Friday... McGann told Transportation Security Administration officers that he's an artist and the watch is art, Nelson said.

Geoffrey McGann, Man With Strange Watch, Arrested At Oakland Airport [AP] (Thanks to everyone who suggested this!)