My thanks goes out to ZYX' for reminding me of this idea. Why have I not seen a TV +/or entertainment system that (optionally) automatically plays your favorite radio station (or cd/other medium) when you mute it to avoid commercials. The commercial-avoidance system could also be auto. Maybe this could use 2+ mute buttons, or have the options on the menu.
Reward: Seeing someone capitalize on this idea.