MUST OWN/A+++ essential Wii and Gamecube exclusives?

I just recently got a Wii (the old version that is backwards compatible), and I was wondering what are the best of the best Gamecube and Wii exclusives that would still hold up today gameplay wise (I'm not too worried about graphics). I'm not just looking for "good" games. I'm looking for games that should be in EVERY Wii or Gamecube owners collection. An example of a game like this would be Super Mario Galaxy or Wind Waker. I hope you all know what I mean when I say I want the "best" and not just "good." If not, just ask, and I'll clarify.

To save you time, here are the games that I either have or am planning on getting, so there's no need for you to suggest them to me.

Oh, and I'm not interested in "multiplayer focused" games such as Mario Kart or Smash Bros. I like games that focus on single player.

Super Mario Galaxy 1 and 2
Zelda WW
Zelda TP
Zelda SS
Metroid Prime 1