I played GB on Wii with another person, co-op all the way thru. Yea, the graphics are not as nice as the 360/PS3 versions, but the Wii is not without some charm and it's not all that bad. The game does really well in the plot aspect, moving things along at a good pace, and good voice acting. The variety of weapons and gear are also a nice touch, slime guns and stasis beams help give the game more robust gameplay.
The game falls short on a few points though, mainly, the game is too short and too easy. Death in GB causes you to become paralyzed, and as long as your partner is still upright, they can just walk over to you and very quickly revive you. The high points in the game are usually when there are lots of ghosts and monsters in the area, and things just feel chaotic. It's a fun kind of chaotic, but at the same time, it feels a little random. Good for kids I think.
* No Sales Tax (except CA)
Cute, but too easy 
The price was one
of the best I've found anywhere. The service
representative was very nice and efficient and my Wii shipped
that day. - Delta Peach 