There's a kid who wanders about my place of work who can recite pi to over 100 digits. He claims that took him about a day to memorise and is thinking about making his fortune, counting cards at the blackjack tables (he must have seen that film with Kevin Spacey and Morpheus). I'm not sure how well that would go down with casino owners from the wrong side of the tracks. Mind you, it's not like he's conspicuous or anything, given his albinism....
