Yes, we know you can continue to charge the 360 controller using the Play and Charge kit if it's plugged in before turning the console off (the so-called "trickle charge" method). We also know you could just buy some affordable, long-lasting Ni-MH AA rechargeables and be done with it. But you can't deny that plugging the business end of your Play and Charge cable into the iPod charger to juice it up sans system is pretty cool.
I'd give this a shot, but I'm a AA rechargeables kind of guy, not to mention my 3G iPod charger is Firewire only. There have to be a couple good uses for this besides not wanting to turn your 360 on. Anyone?