Whoa. Apparently this turned into an NPD thread without me noticing. What's with all the bickering and meltdowns? This wasn't that surprising or unexpected a week...
Since people keep coming back to the question of "how does the Wii keep selling?" I'll just include another link to the thread I created to answer that topic. The answer: massive, dominant, exclusive software sales.
End of 2008 totals: Wii 42m, 360 24m, PS3 18.5m (made Jan. 4, 2008)