An FYI - eCost is selling a USB AC adapter, reportedly for the iPod. Since all the new stuff is only coming with a USB cable, this should be more useful than the adapters that use a firewire cable.

I don't have one, and I don't know how good it is. I'm not vouching for it. I originally posted this because there was a $10 rebate (making it free), but that's over.

Edit: a bunch of edits, really. Sorry about forgetting the link. Nitr0 got it: http://www.ecost.com/ecost/ecsplash/shop/detail~dpno~585353.asp.