Robert J. Lang: Origami Extrodinaire

Robert J. Lang is a pioneer in everything origami. He has designed and folded over 500 models over the past 40 years, written numerous books and articles on his designs, and given many lectures all over the world about the intersections between math and art in this art form.
The link to his website is on the right under "Origami Links"

Here are just a few of his impressive models: