Animal Crossing: City Folk
For all the previously stated reasons. I played Wild World on my DS quite a bit back in the day, and this game was just like it... And that is no exaggeration! What's most disappointing about this game is that Animal Crossing has the potential to be one of the best games ever. No exaggeration: They need to update the graphics (the style can remain similar, but we need something above N64 quality textures and models, don't you think?), add more varied towns (instead of always giving us the same basic layout, with cliffs, a river, and a beach, let us have more say in what we want. A desert? A tropical island? Why not? It's my town!) and add some MMO aspects. Just my opinion, of course, but I hate to see this game series stuck in neutral.
Donkey Kong Country Returns
I actually enjoyed this game quite a bit, mostly because of nostalgia, but Retro picked the wrong DKC to clone. The second DKC had the better music, stages, and motif (yes, I loved the whole pirate gag). I'd love to see a second one!
Skyward Sword
One of my favorite Wii games, but it gets mentioned on this list because it should have been, unquestionably, the greatest Zelda game in the series. The controls add to the game and increase the tension and action. The painterly look is epic. But the lack of diversity (in types of areas and enemies - especially that one super annoying boss-monster you fight multiple times!), content (The sky world was lifeless outside of the main town) and persistent fetch quests brought the game down (The spirit world tests just ate away at my patience, and I hated having to collect those things for that water dragon, just to name a few). There are some other downsides that I could mention, but I'll save that for another time. Again, it's such a great game... when you really master the controls and own a boss or two you feel GREAT. But when your sword gets taken away from you and you have to collect imaginary tears to prove you're the hero... Not cool.
I do want to mention how much I enjoyed the Mario Galaxy series... Some people here were disappointed with it, which I can kind of understand, but I really think Galaxy was the perfect marriage of 2D Mario with 3D Mario. I did miss the openness of Mario 64/Sunshine in the Galaxy series, but I also enjoyed the return to more frequent action and jumping puzzles. The smaller worlds meant more life and less nothing to wander around in. But I do understand why some people miss the openness (and I do hope Nintendo does return to that openness for the next Mario game). The Galaxy games alone made my purchase of a Wii well worth it (I paid $80 for it two years ago), so despite the many disappointments (and missing games series, like FZero and Star Fox, both of which probably would have been great on the Wii) I do no regret buying a Wii.

. Of course, if someone else was playing it and I could just sit back and watch it, I'd gladly do so!
