So, in essence, THIS is the audience they expect the Kinect to target. The young fangirls. The casuals, through and through. This is who they expect will pay the 350-400$ for a Kinect, and a new 360 to go with it. Or more accurately, whose parents they expect to pay for it.
Somehow, I doubt this will be the winning success they think it'll be. Targeting the casuals? They already have a Wii, thanks. Targeting their parents? They're saving for college or retirement, shelling out 400-odd dollars because 'Justin plays it, so I have to have it' may fly with a percentage of that crowd, but not a large one. Targeting gamers? Seems if this thread is anything to go from, that crowd hates the Bieb with a passion.
So, tell me, Microsoft... how exactly does this product placement, albeit in a kinda cool intro for the man, help you at all? And for that matter, how much did it cost you to get it put in there? This is like Activision's 'Look, Eminem!' party at E3. It's awesome to say you can do it, it's awesome to do it, but explain to me how you justify that expense when it doesn't actually stand to sell games.