What I find cool is that this sort of application (3D video recording) is actually possible with libfreenect. I bet the most difficult part was defining a storage format and getting it integrated into an app built with the augmented reality SDK.

[Added in edit:]

Anyone on HN actively toying with a Kinect and want to share some video?

Something I'm doing with libfreenect: http://nitrogen.posterous.com/gesture-like-light-control-wit...