The official name for Project Natal has been decided upon, and leaked before its official unveiling this week at E3. It is going to be called Kinect. Or, Xbox Kinect if you prefer.
The first batch of games will also be named this week at E3 -- Neoseeker's Sean and Lydia are down at the Expo this year, so hopefully we'll get a good look at them. According to website Fudzilla, the games will include a Star Wars title from LucasArts, and a dancing game, which seems a good fit for the motion-detecting system. There will also be a racing game, and an Xbox equilavent to Wii Sports.
It'll be interesting to see if Kinect ends up panning out in a big way, or if it'll just be a flash in the pan of Microsoft's game book.
According to a leaked GameStop image, a stand-alone Kinect will be $150 USD.