Street art is one of my favorite things about walking around in a city. Some recent examples, seen in person or on the web:

Williamsburg images by James

Cut Up Show in London, via Wooster Collective

"At the forefront of a new breed of urban intervention, Cutup have rethought traditional methods of making a statement through the subversion of the visual landscape of the city. CutUp's billboard images are created by slicing up adverts and collaging the pieces into a newly ordered image."