Just before the price cut  at the end of September the Wii had sold 158,000 consoles WorldWide. The first week of the price cut Wii had sold 352,378 (+123%). Since then the Wii has never went down that number and the "next weeks" numbers were better than the "weeks before" numbers with only one or two expections for the rest of the year. NSMB wii was released in the US on November 15, Japan December 3rd and "Others" November 20. These are the numbers for the Wii for the months of November and December. I didn't talk about holiday boost because we all know that there was going to be one, but I am pretty sure that most of us didn't expect the Wii to sell that great. So in your opinion the success of the Wii for the last months of the year was due to the price cut, to NSMB wii,  or to both.

christmas maybe?
you should check past years. The wii starts selling more starting in october usually and sells more and more every week.

I'm going with:

D: christmas
E: recovering in the US economy

I"m guessing the price cut did more but maybe because $200+Mario 2-D=Console form ultimate muiltiplayer on a console and paying for the better version.
So they made a great combo

Definitely both. You couldn't ask for a stronger tandem.

well, the wii sold about 1 million more this xmas than last xmas, but the data also includes one extra day of higher sales. Wii was only down 8% and now it's up 10%. So it's up 18%, which is attributable to nsmbwii and price cut.

Forget about the recovering economy. Overall Christmas sales are down from 2008 (even before accounting for stores which went bankrupt and therefore are selling zero this year).

Both.. but what's scary is that they didn't need a bundle to do it....

So, there were large numbers of people who were waiting for Super Mario Bros. Wii to come out in order to decide to buy a Wii? I am checking the sales of Wii titles, and Mario Kart Wii is STILL in the top 15 in sales (going over 20 million). I would chalk up Super Mario Bros. for the Wii as another one of these games, but am hard pressed to say that it is a major reason for the sales. I would say price cut plus holiday season has led to this happening. People buying during the holidays decide to buy Wiis. Add SBM Wii to the mix of reasons to get a Wii, but not a top reason for the sales increase.

if I remember correctly, Wii isn't the ONLY console upward this Christmas. PS3 saw a much bigger recovering. And yes, I do think the economy played a very important role.