I know that the only game-related commercials I see on absolutely every network at all times of the day and night during any sort of programming - childrens, adult, family, movies, primetime, late-night, sports, news, whatever - are for Black Ops, DKCR, and Kinect (and Kinectimals/Dance Central), with Kinect/Kinectimals/Dance Central being the overwhelming majority of such commercials.
I know that it's all over Burger King, ESPN media, and all over every game and tech-related website or publication you can visit on the Internet, even things like Boygeniusreport (which is about cellphones and mobile tech)
I know that the thing's appeared on Ellen and Oprah and other shit that should have nothing to do with the Kinect.
I know that it's got everything to do with the 500 million dollars they spent to make that happen, which is probably even more than they spent to push Windows Phone 7 - a technology that they launched at about the same time, but probably isn't vital to their future survival in the mobile space like the Kinect is to their survival in home entertainment space.
And anecdotally, given I see people like my kid sister, my mother, and colleagues at work who are looking to buy shit for their kids talking about Kinect, I know that the scheme is working.