What is the most interesting thing you have seen done with a 3D printer or 3D printing technology?

Aside from the Prosthetics, I have to say the Strati 3D printed car just printed over this past weekend http://www.gizmag.com/local-motors-strati-imts/33846/


If you could build your dream 3D printer, what would it include and what would it do? Let your imagination run wild!

Controllable features from my phone on the fly. I would love to just look at my phone from a mile away and micro-manage everything if need be. All doable now, through a mess of 3rd party software and a camera, but no way is it a simple process.