Since I only own the Wii out of these three it goes like this for me:
Wii Sports (of course have)
Wii Play (purchased 2, gave the game from one to a friend)
Mario Kart Wii (first day)
Super Mario Galaxy (getting for my birthday(aug 30))
Wii Fit (trying to find one)
SSBB (first day)
Mario Party 8 (getting before christmas hopefully)
Mario and Sonic at olympic games (no)
Zelda:Twilight Princess (first day)
Guitar Hero 3 (purchased)
So 9 out of 10 I have or am planning to get, so not too bad. It would suck that 8 of my nine are 1st party if this wasn't Nintendo (who I have no problem owning 1000 of their games quite frankly).
Currently dreaming of: DKC4 or Sonic the Hedgehog 4 (classic 2D platformers) for WiiWare, Smash Bros. for DSi, New Super Mario World for DSi, a Wii remake or true sequel of Final Fantasy Tactics.
One down, hopefully more awesomeness to come.