Off the top of my head and in no particular order I played:
Zelda: Skyward Sword- Finally completed it in January, did not like it much. Had numerous issues with the controls.
Mario Galaxy 2: Stopped playing a while ago, went back to finish. Was very frustrated by some of the later stars and walked away.
Skylanders: Played with my son for a little bit. Burnt some sheep.
Pushmo: Love the game, highly addicted to it. Stuck on one of the later levels though. Was distracted by Mutant Mudds and need to get back to it.
Swapnote: Been having fun with it, but interest seems to be dying. Too bad. Showed off some of my various collections.
Mutant Mudds: First few levels are easy, then the challenge ramps way up. Great use of the 3d
Pilotwings Resort: Got it for Christmas because it was on sale. Ok game but not great.
Zelda Minish Cap: Played through the first dungeon, fun game, will finish sometime.
Find WII, Puzzle Swap: Did both on the rare occasions when I Street Passed.
Resident Evil Revelations Demo: Played through it a few times, trying to decide if I want the game or not. Still unsure.
Zelda OOT 3D: Played a little bit trying to finish the game, got distracted.
Wario Ware Inc: Played a few minutes on lunch break. Love the game
Mario Kart Super Circuit: Yup it still sucks.
Mario VS DK: One of my favorite ambassador games, having a lot of fun with it.
Wario Land 4: Messed around with while trying to decide what to vote for in Retroactive. Plan on finishing it one day.
Zelda 1: Checked in to see if I beat the first quest, I had.
F Zero Maximum Velocity: Hated it. Then found out about the feathering trick, need to play again.
Zelda 4 Swords: Messed around with it briefly, not enjoying it much. Need another player.
Mario Kart 7 demo: Messed around with it in Target, seems fun.
I also spent a good portion of the month running around like mad trying to find Radiant Historia for a price I am willing to pay. Held off on getting it when I saw it in November because of Christmas, but no one got it for me. Probably never going to get to play it.