Oh and from viewing the demo video from Apple I HATE the idea that I have to lift my finger every time I want to left click on the mouse. I use the Mighty Mouse now and I click it by pressing down on it.
i noticed that also but i dont feel like apple would be that dumb to make you lift your finger to left click. will have to try that out. the lack of a middle click button for panning worries me the most.
You don't need to lift your finger to left click. You need to lift a finger to right click though, the same as the mighty mouse.