using it as the entertainment hub actually works pretty well. it worked great with my directv box.
you can use a controller or the kinect to control it. so, in turn, you can use motion and voice commands to control.
biggest drawback is it doesnt have hdmi passthrough like an A/V receiver. i hated having to have the xbox powered up to pass the signal of my DTV even when i didnt want to use the xbox to control it. big oversite!!!!!!!