Got a Wii for the kid but it's still in the box (Xmas) but know he really likes the ones the different friends have (he seven).
Took about 3 weeks to get one once I started looking hard. Talking to the different stores, the trick is if it's in the flyer the store will be getting some maybe only 5 but they'll have them.
For me the flyers were dry for a bit then when the Wiis started, I missed out a few times, when the flyer says 'sale starts Saturday' be there when the doors open. Finally did that and was 20th in line but got the last one from ToyrUs for that shipment.
Seems Future Shop and EB games a good bet.
I also got this
link, can't say it work for me as no hits on it until after I got mine, but it did start popping.
Hopefully more will be available with Christmas coming so good luck.