Here is the official Xbox Kinect Games List:

Your Shape Fitness Evolved	Dance Central	Kinect Sports
Kinectimals	MotionSports: Play For Real	Kinect Joy Ride
Sonic Free Riders	The Biggest Loser Ultimate Workout	DanceMasters
Zumba Fitness Party	EA Sports Active 2.0	Harry Potter and the Deathly Hallows Part 1
Deca Sports Freedom	Game Party: In Motion	Fighters Uncaged
Adrenalin Misfits	Child of Eden	Star Wars Kinect
Forza Kinect

We will try to update this as more and more Kinect games come out.