Dell are making printers that 'print' new skin for field medics in warzones ect. It samples the skin and mass produces it and you simply print it onto the injury.
Kinda stumbled over this video today, and thought it was a bit too amazing not to share: http://www.ted.com/talks/anthony_atala_printing_a_human_kidney.html Tailor made organs, made with the patients own cells.