I'm starting with the only games I'll probably ever need:
Mario Galaxy (playing now, AMAZING!!!!)
Zelda: Twilight Princess
Paper Mario (I loved N64 PM and liked SNES Mario RPG)
GUITAR HERO III!!!!!!
maybe Metroid Prime 3

Also, found an eBay seller clearing out his Game Cube games, so I bought the ones I always wanted:
Zelda: Wind Waker
Mario Sunshine (I know, people say it's lame)
Paper Mario 2
Metroid Prime 1
may get Metroid Prime 2 if it's good like people claim

I'm set for games between these and PC games for my new machine: Half Life Orange Box (which I'd never played any of) and Far Cry. After that, I'll branch out into less familiar games for Wii and GCN. I'm a casual gamer, so I like to stick with the favorites.

Ironically, I may buy the Ogre Battle series for SNES and N64 if released to the Wii console. Those are some fun, yet slightly odd, real time strategy games.


Oh, and in Mario Galaxy, try long jumping "off" the "edge" of a two sided, nearly flat planet (like the first planet in (the first) Good Egg Galaxy. What a testament to their gravity engine!