I don't tend to watch much television, mainly because once you start it is hard to stop. Its warming glow draws you into a state of self aware-d mindlessness. I noticed recently that if there happeneds to be one on in a pub, say, my eyes would tend to glare at it, even mid conversation, despite having little to no interest in the program viewed.
This Pixelator device highlights the uselessness of television into simply light and colour moving mysteriously over the screen. i.e the effect of the television is the same with it on or not, and to be honest i think i prefer it on.