Most Obvious use for next gen Motion Controllers

Next gen motion controller means Natal, Move and Motion Plus

Natal:
1) Facial Recognition - The hardware and the software are already there. Lenovo laptops already have this built into their laptops. So adding this feature should be a gimmie. It's going to get rid of the oops My dog just ordered 500 dollars worth of Live stuff i didn't want. Or My kid just stole my credit card and ordered stuff i didn't want them to order.

Log on using your face and use your face as purchase confirmation. It's not full proof because using a picture will work, but MSFT can add extra security measures pretty easily. IE smile to Purchase, Close left eye to purchase...etc

Move:
1) User Generated Art- Sony has been building off of their Play, Create, Share Mantra for 3 large titles thus far and counting. You can create using the DS3, but the move will make it more accessible to the beginner. The Paint Demo's have already been demoed by Sony and the Press.
Custom Paint Jobs for Cart/GT5 Car
Custom designs/Logo for their Avatar/Sackboy/Team Uniforms
Have a Tagging Area in Home. Let users create their own murals
Let users Create and Sell their own product lines in Home

Motion Plus:
1) Sword play
The Controller is held like a sword and thus should be used as one. The Sword play in Wii sports resort was a nice start, but is nothing more than a proof of concept. This needs to be added into the next zelda, Star wars, and any other game that involves swinging a stick like object