If you looking for a some action form time to time and always had a weakness for arcade shooters, this one is for you.
Now many peoples complain about pointing to a sensor bar not TV which make a difference especially when you sensor bar is not directly below or above your TV. I found that putting sensor bar on top of TV makes it very close to light gun experience.
From presentation point of view game holds up, graphic is not brilliant but is also not ugly. Many object can be destroyed, character animation is good and frame rate don't drop at all. Those who liked arcade version graphic will see pretty much this same on Wii which for me is not bad but you would like to see some enhancements since game has been on arcade since 2004.
In overall i see that game as a small break between some other games like Zelda and you can't expect much more of it. It's a brilliant game to play with friends. As they say "Easy to play, hard to master", so let's turn off cross hairs and see who has a better aim.