The Kinect is the fastest selling consumer electronics device ever

"Microsoft has announced that the Kinect sensor for Xbox 360 has already sold 10 million units, earning the peripheral a Guinness World Record.
The motion gaming add-on is now the "fastest selling consumer electronics device" after shifting 133,333 units a day in the 60-day period between the launch on November 4th and January 3rd.
Gaz Deaves, gaming editor for Guinness World Records said: "The sales figures here speak for themselves.
"According to independent research, no other consumer electronics device sold faster within a 60-day time span, which is an incredible achievement considering the strength of the sector."
The figures announced by Microsoft today outstrip even Nintendo Wii sales, which took 2 years to reach the 10 million mark."
Source:  TechRadar, 9th March 2011