I don't know if this has been posted, but I just came across this by watching the SEMA tech and there's now an adapter for charging the iPhone 3G as well as allowing integration controls on our screens. The integration has always worked for me on an 08' G35x, but charging was never a capability. Just thought I would share this to see if anyone has tried it.

http://scosche.com/products/productID/1667

 

yup. a couple of guys have tried it... and it works too bad i already got played HARD by my girlfriend and handed over the new ipod to her and got stuck with her beat up old one.