We've seen a few iPod-controlling garments in our time, including that way-too-expensive $275 Koyono BlackCoat, but now here's the Kenpo Jacket for iPod that's a little less pricey and keeps the rain off you at the same time.
Plug your iPod into its dock connector and then you can control its functions from the left sleeve. It's got a fleece lining, too, to keep you toasty warm. The company says there are no wires leading from the iPod controller to the sleeve, and no batteries are required to get this thing to work. Not bad for $149.95.
The iPod-Controlling Jacket [Hammacher Schlemmer]