How are you supposed to walk and run with Natal?

[Kantor]

Hephaestos said:
the movie "gamer" had the player put his palm forward for walk (as pushing the back of the character).... so I guess you close the palm for stop and show the back side of your hand for backsteps and the side for going right and left with the hand being about 10cm appart for both options.
use your other hand for shooting and aiming.

sounds intuitive enough.

then there is also the option to talk ^^

So you're going to be using your hands to move and turn, while aiming and performing other actions?

Isn't Natal meant to make gaming simpler?

I think it would avoid this sort of game, and focus on the multitude of genres and ideas which a motion camera could work with. You can't have a game like Halo, using only NATAL. You could perhaps have a handheld joystick.