May replace a streetcorner artist near you. Neat robot that draws a picture it takes of you on paper. It has a 3D based arm that is neat to watch, my 2 cents, I would have done more of a CNC approach (too complicated of a build this way). Fun to watch thought. Noticed the arduino used to control it in the video.
http://hackaday.io/project/895-Roboartist