Exploiting depth in photographs

These are some photos that exploit the lack of depth in a photograph. These clever angles make for interesting pictures because they capture a 3-d world on a 2-d medium. I think the technical term for it is 'perspective distortion' - objects closer to the camera appear larger than those in the background.

More such pics can be found at http://www.flickzzz.com/2008/08/no-photoshop-here.html