The awesomeness of this hurts my brain. This is the 'Monkey Light' that adds super fun displays to your bike wheels. The lights come with pre-loaded animations, but you can add your own JPG, GIF, PNG, AVI, MPEG, MOV, QT, FLV, and more.
"The Monkey Light Pro has 4 bars of LEDs which are attached together inside your wheel. As your ride the system rotates, using Persistence Of Vision to create an image with its 256 full color LEDs. The Monkey Light Pro has sensors to track its speed, heads-up position and rotation direction. This allows the system to create stable, full-wheel images from 10 to 40 mph"