I just got a Wii, Mrs. Hoser said I could after working 4 months straight crazy overtime. I'm in love with the New Mario Bros. Wii, Beatles Rock Band is fun (I just got both for my birthday) Boom Blox and Boom Blox Bash Party are hilarious fun, and the Lego series are great (although I've heard some rumblings about the latest Indy Jones).
Wii Sports Resort is supposed to be pretty good as well.
How is that Cars game, btw? I've been considering it for my son, since we're going to visit his cousin over the holidays and that cousin is a huge Cars fan.
You can access the wifi directly in the menu, I fiddled with it to see if I could find any local access ports.