Some researchers have developed a new miniature projector that can fit inside small electronics, like cell phones:
http://www.physorg.com/news203623130.html
Or, more importantly, this could fit in a handheld gaming system. Can you imagine what Nintendo or Sony might do with a projection feature in a new DS or PSP? This could potentially add a third display to a DS or even replace a screen on a handheld. Maybe it could even be placed in the next generation of remote controllers. This could really change gaming. What do you think of the concept of a projector integrated into game systems?