I can't recomand you any, but here's a few I recommend:
Super Mario Galaxy
Guitar Hero 3 (if you like the series)
Metroid Prime 3
Mario Strikers Charged Football
Resident Evil: The Umbrella Chronicles
Zelda: Twilight Princess
And that should keep you tided over till Super Smash Bros. Brawl comes out in February.
get super mario strikers or medal of honor heroes 2. easily the two best online games for the wii, and they should keep you busy for hours on end lawl.