Many of us have been going to professional conferences like CHI for many years and seeing technology demos and other research into novel new advanced user interfaces. However, we typically go back to computers with their screens, keyboards, and mice. Although that environment is likely to be the optimal one for many people doing many of the things they do with computers now, it doesn't have to be the case for some edge type uses. I, like others, have been delighted to finally see some of that university research technology getting into products recently. The best examples are the Nintendo Wii and Apple's iPhone. Both use gesture as a primary input mechanism and do it really well. You know that a paradigm shift is happening when you can't just read about or watch someone else using one of these devices; you have to experience it for yourself. The first game you play on the Wii and the first time you flick your way through stuff on an iPhone, you've got it. Its a different experience entirely. I think this is an exciting development in the area of advanced user interfaces and one worthy of following - and one worth following first hand yourselves!
Read more in an interesting article Coming Soon: Nothing Between You and Your Machine in the New York Times.