Overview:Using only a cheap digital camera, some masking tape, and Illustration or Photo-Editing software, you can make some amazingly-handsome Trompe-l'oeil/Forced Perspective wall-art (yes... very much like that awesome parking garage that everyone on earth forwarded you). Your friends and neighbors will be astounded by your cleverness.
Viewed from the proper angle, the illusion of a 2-dimensional "flat" image is presented, but viewed from the side you will see the gross distortions that make the "proper" angle possible.
Note of Thanks: This Instructable was influenced greatly by--and wouldn't have been possible without--the help I received from this thread on AskMetaFilter. There are some smart and creative folks there who can really help a guy out with a project. (If you can wade through the questions about recipes, pets, or relationships, you'll find some absolute gems.) Thanks guys; awesome input.