I think you need to look at these videos from 1up and destructoid as they look and play the demo in person. Everything in the media breifing is being shown here and done by the press, plus more.
1up
http://gamevideos.1up.com/video/id/29918
Destructoid
http://www.destructoid.com/e3-10-floaty-hands-on-clips-of-kinect-with-forza-176551.phtml