Yo, yo, yo, b-boys and/or b-girls: Music game Def Jam Rapstar has added Kinect support, and publisher Konami has lowered the price down to $39.99 for the game, and $49.99 for the game and the mic. You could save yourself mad money, son. Holla! Plus, you'll be able to use your Kinect camera to upload video of your unstoppable flows, ninja.
Seriously, though, two things: 1) Def Jam Rapstar is a really good game. Surprisingly fun, interesting and well-made. 2) Why isn't every game or device that allows you to use a camera compatible with Kinect? I tried to take a picture with my Kinect to send to a friend, and it couldn't even do it, same with games like Uno... what's up with that? I can only hope fixes are on the way for all of these things.
Anyway, buy Def Jam Rapstar! It's cheap. Word is bond.