The Wii wasn't flying off the shelves alone. Twilight Princess accompanied 454,000 of them. That number is actually quite surprising given how large a franchise it is; we'd have expected every Wii to be paired up with its very own Zelda game, a 1:1 attach rate. In any case, Twilight Princess is looking to be the first million seller on the Wii if Nintendo can (presumably) reach those 2 million in the US by the end of January.
Nintendo's positive news is nice for those who still want a Wii but can't yet find it; you may have a relatively easy time finding one before the next big holiday hits. This is, of course, a far cry better than the other guy. Can Nintendo capitalize on their production capabilities and storm the market?