There's no limit, no limit I tell you, to the power of Lego. This is a do-it-yourself 3D laser scanner made of Lego used to scan Lego pieces to use it in a Lego 3D design software to build more Lego.
The scanner uses a NXT controller, Lego pieces and modifications to connect the laser reader to the software. The results are incredibly good. These are the scanned pieces, in the 3D CAD software LDraw:
I love the idea of Lego scanning Lego to create Lego. You know where all this is going: it involves paradoxes, judgment day, bleeding goats and inter-dimensional portals. [Brothers Brick]