Bobbuffalo on 18 August 2008
wow! thanks all of you for your suggestions! seems that the SMG/SSBB/MKWii trio is a good option.
I will take note of other games that may come out, like De Blob and Animal Crossing that seems fun and interesting. Other games like the Okami, RE4Wii and DQS may buy them when they are cheap or second handed.
And I wouldn't rule out Wii fit 
hehe but is kinda expensnve like Guitar Hero 3
I may also "sacrifice" one of the games and buy 2 games and a wireless router to play online =) but we'll see.
Thanks all of you!
