I'm not sure if this is a good or bad thing, but Mario Kart is sold out online at Amazon, Walmart, Target, Gamestop, Costco and Best Buy. This is crazy, Nintendo needs to get it in gear.
I saw a crapload of MK's at costco last week. They are all gone now. I was also at the Nintendo World Store last friday and they had no MK or Wii Fit, but had a decent stack of Wii's, maybe 20, at the time.