To satisfy his less regimented artistic side, (David) Zinn tries to get out into the fresh air and draw chalk art in public as often as possible. Years ago, he remembers walking by a piece of graffiti on a Washington Street sidewalk. Mickey Mouse grinned up at him, but he had no ears. It was strange. “It was the most random piece of graffiti, until a certain point (in the day) when a parking meter’s shadow fell (and became) the ears. That was one of the first cases I ever remember of experiencing art that was suddenly underfoot, serving the purpose of shaking you out of what you are doing at that moment,” he says.

Anecdote 3: It's not photos, but it is guerilla art. There used to be (1980s) a dozen or so cartoon faces -- just eyes, mouth, and nose with no head or body -- painted on the sidewalk in various places around Ann Arbor, Michigan. They don't make any sense by day, but by night, each is strategically placed so that the street-light shadow of adjacent twin parking meters casts a shadow over the face. The painted features plus the shadow creates a perfect Mickey Mouse, ears and all.

The artists, discovered to be an art student at the University of Michigan, died a few years later, and while friends occasionally repainted the stencils in his honor, the remaining Mickeys all but faded away and the curved meters were replaced with squarer ones.