An interesting suggestion raised by a commenter on the article:
It's not what they're doing, but what could be
done; living cell arranged in such a controlled way could easily build replacement organs or even limbs, opening a whole new field in medicine and giving hope to thousands.
This is a really neat possibility. We aren't exactly lacking hamburgers in the world, so once the meat-printing tests move forward, if this 3D printing of bio-material becomes cheaper and more accessible, we could possibly print 'real' human muscle or skin etc. that could be used in replacement of skin grafts on burn victims for example.
Also perhaps in the more distant future the chance to print entire limbs of people to transplant on. The medical appplications of 3D bio-printing is the direction I can see this heading. Very cool stuff.