XP3 Ultra Clock: Using Persistence of Vision to Tell the Time

XP3 Ultra Clock, a "persistence of vision" clock - $59.95

This one's a classic, but it's still pretty nifty. Here's a clock that uses an oscillating wand with LEDs and the concept of the persistence of vision to tell time and display messages. You can even program your own messages. Over at the Neatorama Shop: http://shop.neatorama.com/product-info.php?XP3-Ultra-message-persistence-vision-clock-pid557.html