Why do I want a screen on my controller?

[NJ5]

Tizona said:
BTW, to answer the original question, the prospect of going from TV to Controller screen without interrupting the game is a VERY real deal maker for many people, especially the family crowd and married young dudes like myself. I find that I don't play console as much as I used to simply because we only have one big HD tv and my wife likes to use it as much as I do. When I told her what WiiU could do, she simply said "that's genius, why haven't they done already?". The fact that she can watch her Bachelor and Glee and whatnot, while I continue my game is HUGE for me and will mean a lot more use for people like myself.

Yes, I can see the appeal of playing console games while taking a shit, etc. But that could be done with an add-on, without having to pollute the controller with a humongous screen.