Undergraduate degree in mathematics two decades ago (Queens’ Cambridge). Now an amateur tinkerer. But my estimate of the Chow & Robbins constant has more decimal places than any other (as of early 2013). But could be improved: see question.
Geeks who arrange wine tastings might like my software that makes placemats that are both elegant and functional. And it’s free: not even freemium, just old-fashioned free. (Also the inspiration for my avatar.)