The Apple TV has now been hacked to boot off of an external USB HD. This means, simply, that we're well on the way to seeing full access without cracking the case and thus obviously voiding the warranty. Apparently, this is done by booting into recovery mode using a modified disc image on the external drive. Now this is not a completely worked out hack yet, and there's still much left to do, but this is a significant milestone as it shows that, in principle, the Apple TV is bootable from an external hard drive. Further it shows that the USB port which Apple claimed "is only used for service and diagnostics" and unable to recognize USB devices is, in fact, live and can be used.\nThanks Chris!