writes: I'm a math professor at a public liberal arts college, and have had a few tattoos on my back for a few years, but none of these are related to my discipline. Just yesterday I obtained my first math-themed tat, straightforward and simple: the Greek pi is surrounded by a few turns of a spiral made up of the first 95 digits of the value for the irrational number pi (3.14159265...). There's room at the end to add to it, should the need arise. (Maybe 25 new digits for each new paper published? I dunno...)" Click here to go to the full Science Tattoo Emporium.