Engadget has noted the appearance of a new PlayStation 3 accessory in Japan: a USB charger that can juice up two PS3 controllers at once. While Cnet wouldn't be surprised to see this thing appear Stateside as well. The problem is: there's really no reason it should need to exist. And if the PS3 were better designed, it wouldn't have to. In fact, the existence of this sort of accessory just serves as a reminder of some of the PS3's biggest annoyances--all the more evident because the superb gaming console/Blu-ray player/media hub is otherwise close to perfection.