The internet is boring today, so I haven't found anything interesting to post. The best thing I've found so far is a paper on how π should actually have been defined as 6.28, not 3.14, because then (a) we wouldn't have ‘2π’ junking up all our maths unnecessarily and (b) a circle would be exactly π radians around, which would make maths better for everyone.
Anyway. Hopefully the internet will send me some better stuff tomorrow. In the meantime, feel free to post any links you have lying around. Thanks.