I can snap my hand and snipe someone's head with a mouse but I can't do that with the Wiimote. Yet.
I would only be able to do that with the WiiMote if they introduced that zapper shell I've been looking at and use that for pin-pointing where the hell my crosshair will actually land, since the device works in 3d-space, it's not as simple as moving the thing horizontall/vertically as the mouse, as it's impossible to do so with the human hand without adjusting the tilt or the current depth (for lack of better term) to change the overall target....
My main problem with the pointer is knowing exactly where I have to aim it to *see* it on the screen, most of the time playing Zelda I play with the remote on my side, pointing away from the sensor, and whenever I get that slingshot or boomerang out...3 seconds blown trying to get the little cross-hair onscreen.
Well, at least games won't be needing some form of built-in sway for the snipers in FPS since my shaky hand already kills my precision factor a fair bit in the head-shot department.