It's understandable if you don't like wagglewand, or don't want to play in standard definition, or if Nintendo's archaic online isn't something you're willing to settle for. But there are games whether or not people are paying attention to the release list.
Excitebots, Punchout, and Tiger Woods m+ are good shit and all came out this year. Highly recommendable. The Wii is also the first Nintendo system after the SNES where I can think of a few multiplatform games that edge out their counterparts. Pro Evolution Soccer is better on Wii, so was Shaun White snowboarding.
edit: Hmmm, I should put a disclaimer that I haven't played other versions of said games other than Tiger Woods. So if you'll excuse me for pulling comparisons out of my ass I'll just say I liked the controls in said games and can't imagine how they would emulate such controls on other consoles.