However, I have to say that despite that first extremely unpleasant experience with Apple peripherals I actually quite enjoy using my Magic Mouse, and the touch-sensitive surface is one of the more interesting innovations in a field that's largely been stagnant and where most "innovation" seems to be high-DPI lasers and RGB LEDs.
The ability to use touch gestures on the mouse itself (i.e. 3-finger swipe on the mouse's surface to switch workspaces, 2-finger swipes for browser back/fwd navigation, scrolling, etc.) is pretty awesome and not something I've seen anywhere else. I'd never depend on it for getting headshots in counterstrike but for desktop mousing it tracks okay and the battery is quite good.