Played about 3 hours now.
Graphics are pretty damn good. Still no 360 or PS3, but FINALLY, a game that looks like its an upgrade from the gamecube. This game really seems to use the wii's strengths. Some areas in the game just look so good, so much depth. Its very clear that a lot of work went in to this, unlike 75% of other wii games so far imo. Its not so much the processing power of the wii, but more so the depth that designers went to, to make it look real good.
Aiming in other games(godfather, splinter cell, even RE - not cool-) is plainly uncomfortable, especially with your cursor always falling of the screen, or the lack of smoothness. But here the moment you start on the walkway, the wii-mote feels interactive with your character, what seems like a first in my experience.
This game despite anyone's lack of gaming or wii-skills is playable and a great on the wii for more the than just a FPS fanatic. I hope we get a few more like it.