Norm Barker of Johns Hopkins specializes in photo-microscopy. His work appears in books and museums. For some reason, I find this photograph of miniature surgical tools fascinating and beautiful.
These surgical micro-burrs are used in everything from dentistry to neurosurgery. Each tip is highly specialized, made of high-quality stainless steel or titanium, and many of them have a diamond crust. Using these tools, surgeons can cut, clean, shape, smooth and carve even the hardest human bones.
You can see a few other examples of his work on this Scientific American slide show.