You might remember that for the last two years, the Wii was really hard to find in December. Well, that is holding true for this year, too. Even though Nintendo boosted the number of systems for sale by 50%, Wii is still selling out everywhere.
Some references:
http://www.pcworld.com/article/155324/n ... idays.html
http://www.1up.com/do/newsStory?cId=3171916