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Checkout this cool cartoon that is printed with individual atoms!

http://www.edn.com/electronics-blogs/tech-edge/4413271/Now-playing–The-world-s-smallest-movie–made-with-atoms-

We might not be that far away from a time when we have individual atom printing.  That could really open a can of worms as people could make anything from illegal drugs to patented compounds.  The technological advance this represents is huge though as when you can manipulate individual atoms you can do almost anything.