Below is a great video that shows a classic illusion designed and built by Jerry Andrus. Jerry is a backyard magician and illusionist who created his own kind of special magic tricks for his entire life, up until his death in 2007.
If you liked his impossible box, you will love this video of 83 of his most amazing illusions.
Here are a few trailers and a 14 minute excerpt of an amazing documentary about Jerry. Worth checking out if you want to see how the mind of a mad scientist works.