Imagine both your arms and hand gestures becoming the "controllers?" That is how the game will be played. Talk about working on your catch!
Here is a synopsis and a link to a demo of "Kinect:"
"... Kinect brings games and entertainment to life in extraordinary new ways without using a controller. Imagine controlling movies and music with the wave of a hand or the sound of your voice. With Kinect, technology evaporates, letting the natural magic in all of us shine. ..."[Link]
This actually may be the game that inspires me to buy an X-box! Damn you Michael Phelps! I swore I would never buy anything from Microsoft EVER!