Some dreams cannot be a reality for the sheer, crippling cost of 99 red balloons, not to mention the kind of Hurculean physiology one would need to inflate that many balloons.
Thankfully, with a few (many) lines of code, a kinect, and an mp3 file incorrectly labeled with "Bjork" as my crutch, a world of unbound joy and happy music times has become my reality.
Anyway, my tools in this were Processing, the Shiffman port of the libfreenect library, the Toxiclibs set of libraries, and a Kinect. This is my first attempt with a number of the tools, including the kinect, point clouds, the toxiclibs approach to coding physics systems, etc. I'm going to be uploading my stuff to github soon, so would greatly appreciate any advice, esp. when it comes to working out the physics... Thanks!