Kinda off topic, but I just purchased a USB/Power cable for my PSP.
Penguin 6012: http://www.highiq.com/pic00017.jpg
With this cable, I can charge the PSP with the OEM BB wall adapter or my trusty USB car adapter. One less brick to carry around, glee
I can't charge both simultaneously with car adapter, but seems to work fine from my PC and laptop.