For WII try Little King Story, that game is great, and:
Rpg: Xenoblade
Action Game: Sin and Punishment 2
For the GC you can´t miss F-Zero GX and:
RPG: Tales Of Symphonia + Paper Mario: Thousand year door (Best paper mario ever imo)
Action: Viewtiful Joe
Platformer is obvious: Mario Galaxy, Sunshine, Doneky Kong Country returns, Kirby Epic Yarn, etc etc