This is obviously a hoax, but nanotechnology is supposed to be the up and coming thing in science. Such things as nanocomputers, nanobots, and of course, nanoweapons are supposedly being developed as I type this. As far as medicine goes, they are supposed to be working on nanobots that will be injected into your bloodstream and then work on killing or repairing your bad cells, or destroying the bad bacteria and viruses that make you ill.
And it makes for good science fiction too. Check your local bookstore for these: (Oh, that's right, you work in a bookstore!)
Prey by Michael Crichton
By the Light of the Moon by Dean Koontz (you remember him, right?)
Goliath by Steve Alten