I bought myself a Wii in the summer (my b-day present to myself) and love it. Actually am using the boxing game as a quasi-cardio workout.
The game choice is limited compared to the other consoles but there are enough of a range for all tastes. I do like the dynamic remotes (wireless) part of the Wii compared to the sit in one place and only move your thumbs controllers of the other manufacturers. You can sit and use Wii but it is more fun to duck bob and weave for real.
I have a few games collected so far including Medal Of Honour - Vanguard, Second Opion (medical game), Texas Holdem, Madden 2007 (football), heatseeker (pilot/fighter game), and Resident Evil (I haven't tried that one yet).
The local Wal-Marts seem to have a pretty good supply chain coming in. I did try three times however but then spoke with one of the sales gals and she toldd me their delivery dates and stocking schedule, so I was able to get it right off the cart before they even put it on the shelf. If all else fails let me know and I can see if I can pick another one up for you. They are going for $260-270 (CDN) right now.
Good luck and happy gaming
Uzzah