Head unit w/iPod connection?
 

I'm not talking about just an aux input. I want a head unit that has a real iPod connection. The aux input doesn't keep the iPod charged like the iPod connection.

Of course, if there is a way to charge the iPod in the car while playing it via an aux input I would like to hear about that as well.

Look into Alpines line. But I am certain most manufacturers have this features, although sometimes you need to buy an extra accessory.