If natal truly works as planned, then we truly could see the equivilant of an true gaming revolution. De ja vu, but lets hope the 'revolution' sprawls beyond a fantastic new audience, and into mainly entirely new game possibilities.

FPS

Logging into game with your profile as recognised by your features.
Multiple players via split screen

Gesture for Trigger such as finger squeeze (relies on finger tracking)
Aim, Scope via voice commands
Hand tracking for Mouse look
Leaning tracked
Grenade as gesture Picking from body and then taking pin out and throwing (Similar to the guy picking up the tyre in the Natal promo) Voice ie. Smoke, Gren, Flash.
Picking up items by grab motion

Movements activated by Voice
Forward
Back
Sideleft
Sideright
down (Crouch) down (prone)
Up (Crouch) up (standing)

Communications
Voice activated

Menu called up via Gestures

I think this will be one control scheme option but I expect you to be able to fully customise the selection such as right or left handed and modify voice commands. Also I expect you to always have the option to continue to use a normal controller.

We saw that the movements were quickly translated but this is critical in a FPS game especially if you have multiple controller schemes in operation. This will be very immersive and I think will take away some of the complexity in remembering control schemes.

^
thats a whole lot of voice commands you got to do. got damn. lol

Not sure how the dumb community will feel about this but I fully expect to have mutliple control schemes as options. I do not see to many games forcing Natal only options on you.