Well, I normally don't respond to threads, but I saw this and decided to set things straight. I just read the internal memo off the Employee News section of the internal Best Buy website, being a corporate employee, and this is the jist. The 16th is the ONLY day before Christmas that the WIi will be advertised. It's an ad minimum of 21, some store of course have more. Some have it in stock as we speak. Some of the stock rolling in is labeled "DO NOT SELL UNTIL DEC. 16th", some is not. If the GM approves, the store can sell any Wii's that are not marked with this "DO NOT SELL" message, but that's few and far between. They are told that after the week of the 16th (16th - 22nd) they will get drop shipments of Wii's, but do not know the exact date, just know it will be sometime in that week.
I know it's a little annoying that they hold them for days (in this case some stores will have held them over 2 weeks) but you've gotta look at it in the evil Best Buy eyes. If they advertise them, people will come. They're more than likely to get them in the store to get them to buy other things if their Wii dreams go sour.