I have a link to an electronics magazine blog that has a link to a wonderfully clever "magic" LED circuit!

http://www.electronicsweekly.com/blo...work.html#more

The circuit has three switches and three LEDs all wired in series. Each switch activates one of the LEDs, contrary to how you would think it works. The blog has a second link to a video where the creator shows you how the trick was done, and I was very impressed! Quite clever!

enjoy,
Steve K.