Just want to say I bought the Pelican cooling fan stand for the 360 for $15.00 at wal-mart and it works awesome. Plugs into USB in the back and has a USB on the back of it so you can still utilize all 3 usb ports. And it is relatively quiet, has a button on the front that turns it on and it lights up blue when it is turned on. And of course it turns off with the 360 seeing as how it is powered via the usb.
Good cooling solution for cheap.
I will get a link as soon as I can find it somewhere online.