This is insane. Some guy over in the Czech Republic hacked a battery from the MSI Wind netbook, turning it into a USB charging port. Believe it or not, he can charge his iPhone twice in a row, and the battery still works in his netbook!
Luckily for you hardcore modders out there, this guy made a how-to video (underscored by European techno) showing you how to mod your netbook to have a USB charging port as well. Check it out.