According to an article published on USA Today Microsoft’s motion device is officially called Kinect.

There were also a number of games announced including:

Kinectimals
You can play with virtual animals. Lol cat Kinect!

Joyride
A racing game where players steer with their hands.

Kinect Sports
Boxing, bowling, beach vollyball, track and field, soccer and table tennis.

Kinect Adventures
River rafting with friends.

Dance Central
A dancing version of So You Think You Can Dance.

Source: IGN