For those who like the kinect but feel it's too big for your robotics project the future is smaller.
Leap motion have a new 3d sensor coming that is a fraction of the size of a kinect.
I don't know if actually produces a point cloud though. Does it? Or does it just track fingers?
Not sure, they seem to be secretive about how it works. The accuracy is fantastic though, it senses your finger to within 1/100th of a millimeter. Also I just noticed it's got fairly short range @ 8 cubic metre space that it works in. Thats like 2x2x2 metres. Not as far as the kinect but not bad all the same with that sort of accuracy.