If you guys haven’t seen the MotionPlus tech demos, check them out on YouTube or google them. some pretty cool sword-fighting and whip-slinging gesture/motion recognition.
AND apparently they are not a Nintendo exclusive product. They could probably migrate to PS3 easily, MSoft are talking about some form of Minority Report-like UI for their 360, and hopefully the PC will get some action also…
http://www.gamesindustry.biz/articles/motionplus-tech-not-exclusive-to-nintendo_3