"The full spectrum of color, design and programming available for the Times Square ball."
It just sounds cool: "light emitting diodes." Whoa. "Many of the biggest bulb manufacturers are now convinced [L.E.D.'s] will supplant incandescent bulbs and compact fluorescent bulbs," writes Erica Taub of the NY Times, because L.E.D.'s are bright, beautiful and last a whopping twenty years. Unfortch [for me, anyway], the current price is a whopping $107 a bulb. You can check out the NY Times article and photo gallery here.