Robert J. Lang is an origami (Japanese paper folding) genius. His website is full of examples of his work, as well as descriptions of the mathematical techniques he uses to devise his creations. After a career as a physicist and engineer, he became a full-time origami artist and he's one of the top folders in the world. For example, he made this Tiger Beetle out of a single sheet of folder paper!I've always been a fan of Origami (even though I'm not very good at it myself). His work, from tiny bugs to large dinosaurs to a complete orchestra, is amazing to see. Because he uses Macs, Apple has posted an article about him.