CES is a technology geek's playground.
Interesting, but not ready for prime time (in our opinion), was the Displair (http://www.pcworld.com/article/2024879/displair-gives-you-a-touchscreen-out-of-thin-air.html)—a touchscreen that floats in the air. A "screen" of microscopic drops of water are shot upward from a fairly large tabletop unit, and a projector can display onto this water-vapor screen. Most intriguing is way that the projected image responds to touch. At $10,000, this seems more like a prototype and needs work.
There was a lot of talk about moving PC gaming from your desktop to your living room. What can be better than high-definition video on a life-size screen with life-like surround sound? Agreed: nothing.
Of course, OLED and Ultra HD were probably the most talked about. Not yet affordable for the masses, they're on their way. (http://www.pcworld.com/article/2024911/oled-and-4k-at-ces-2013-the-fantasy-and-the-reality-video-.html)