"Two angles - two programs" TV screen
I wonder why so many ideas are about inventing the perfect TV...
Anyway, here's another one. You probably know those postcards where you can flip the card and suddenly you see a different image. I've also seem money machines where the screen will turn black when you're standing just a few degrees away from the center of the screen.
Why not combine both, and invent a TV screen that will show two or even three different programs depending on your viewing angle?
Ever noticed that when you go to a pub to watch football, there are only men watching? Solve the problem by showing the shopping channel or the Chippendales on the same screen, just from a diffent angle. Ever had discussions in your family about what program to watch? No big deal! The smaller kids (who are sitting on the floor) can watch Disney, while mom (or dad), who is busy ironing, can see her favorite soap opera on the same screen.
Reward: Such a TV for free.