And you can't do this anymore, at least with broadcast TV. My local diner as a bunch of TV's on about the place, all tuned to the local Fox, CBS, NBC, etc. affiliates so you have the rare opportunity to see them all at once. They're all timed so their commercial breaks coincide with one another. It's down to the split second -- every channel goes to commercial at the same time, for the same length of time. It has to be intentional.