Reddit's Smsilton took this incredible 60mm macro shot of an iconic MC Escher painting being refracted through a drop of falling water, and documented the process:
Yeah I used the Canon 60mm macro f/2.8. I shot at ISO 640 and 1/250. It took about 150ish shots to get that one, ~2 hours. The hardest part was focusing, in the set up picture I posted in the first comment you can see a piece of string above the eye dropper. I would let that hang down off the eye dropper and focus on that, then move it and squeeze the dropper and the shutter at almost the same time. I have like 30ish more pictures with the drop clearly in the shot but the sketch behind it isn't in focus, this was the clearest one I got.Water drop falling in front of an MC Escher sketch, I took this pic (imgur.com) (via Neatorama)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.