Saw this image on BoingBoing today.
Both of these items are US mains power to 5V USB adapters. They both do exactly the same thing. One is made by Apple, for the iPhone. The other is by Microsoft, for the Zune.
This is an example of when dedication to design is very very pleasing.
I suspect that the Zune charger costs less. Possibly not much less, but hey, every little bit counts when you’re shipping product in big enough quantities, and baby these Zunes will FLY out the door!