Oh my... Thread is full of stupid fanboyism. Let me explain to you children what is Playstation eye and Natal.
Project Natal is the simple camera with infrared sensor and with its own microprocessor so without processing power it can stand in its own.
Playstation Eye is the same thing that is Eye Toy but "four times the resolution" and "two times the frame-rate" then Eye toy + voice recognition.
Natal and PS Eye are absolutely the same. You just need software update for both so they can work correctly.
For my perspective i understand Sony on why they wanted to make a motion controller to the PS Eye, because without the trigger its is not the same experience. I actually played some PS Eye games and i can say that after five minutes you get bored.
So Natal or PS Eye is nothing special at all. They are the same and can give the same experience. Even with good software lineup, after playing few games you will realise its a bad idea. Playstation Eye and Motion controller is something but if they can give good quality Software. Thats it and Sony's Motion Controller is not a ripoff from Wiimote because you can't say that Sony/Microsoft controllers are rip off... Its just a controller.
And what Playstation Eye with Motion controller do is awesome if only Software and thats the big thing.
Essay Pro