As an avid cyclist with Lance Armstrong Underoos, the Reelight Bike Lights have a certain appeal to me. I love the idea of lightweight head- and tail-lights for my Trek but I don’t want to replace batteries, nor do I want to add any friction to my ride by self-powering the lights with some mechanism dragging me down. The Reelight’s ought to solve my problem (the lights problem, not my choice of briefs problem) because they use magnetic induction to power the LED-based lights. Using four magnets on the spokes of your ride, the Reelights can last longer than the Energizer bunny if you’ve got the strength to keep pedaling. Not a bad deal for a tad over $50.