Has anyone ever tried it? My ATV1 is running XBMC which of course has DVD playback support, and of course the ATV doesn't have a DVD drive. But it does have a USB slot in the back, which I know has been enabled on the hacked ATV's like mine, to allow use of USB flash and hard drives. Has it been enabled to allow the use of an external optical disc drive though? And more importantly, could you use a BluRay drive? In effect, turn on ATV, boot into XBMC, slide a BRD into the external BR drive connected by USB, and press play and it, in alleged Apple fasion, "just works" ?