I know for me, I had hunted for one for awhile too. My "quest" ended with a local Toys-R-Us saying that they might get a shipment on a monday back in September. I first called on a friday where they first mention it. The next day I go into the store and ask an associate in that department that says the shipment will be late and won't be there on monday. Finally, that monday, I decide to go there at opening and there was a small line of 8-9 people aready lined up! Anyway, I ended up being the next to last person to get one that day.
Holiday season is rough, especially when it comes to finding a popular item like the Wii. Online purchases are pretty much like how they were last year, with almost all stores out of stock EVERYONE is hitting up the internet for one. Best advice I could give you, if you REALLY want one in the near future, is to do your research on when local stores near you receive shipments and to get to know and befriend people at those stores. I lucked out with Toys-R-Us, but I had friends that I worked with at a Target store that were still there and looking for me. The only reason I wasn't able to get one sooner through Target was due to my schedule at work (ie- working on days they had a shipment of Wiis.).
But yeah, I hope that helps a little. I know it sounds rough, but you are either gonna go about getting it through one of two ways- by shear luck or by scheming & hunting, simple as that. I don't think you'll find a whole lot online for a good while, (Unless you're willing to take those ones that sell for $10,000 on E-Bay, lol) so keep checking those stores and hopefully you'll find one.