Stone bridge optical illusion in New York. This image is an example of reflective imagery in photography. I like this illusion of a complete group of circles, instead of the reality of the group being a selection of cleverly placed bridges over water.
Really clever way of implementing a bus ad. I think bus ads are effective, but they have this tendency to be too cluttered. This one is just clever enough to make the consumer feel good about themselves when they figure it out.