This is very cool... Poking around YouTube last night, I came across this video by a group called Grand Illusions:
Neat huh? I immediately went online to find this thing (Download a PDF here ) and tried it. After you figure out how to fold it right (it's not easy - took a couple tries), it really works! It's best if you put him at eye level and close one eye, and even better on video. Here's one I made:
