Having completed my posting of a new program in celebration of pi day (going back to just spelling it out, since somewhere in the WordPress to Twitter chain, the HTML entities get dropped) I was reading my twitter feed, and found Vi Hart's amusing video asserting that "Pi is Wrong". Click through and watch the whole thing.
Her argument is really derived from Michael Hartl's Tau Manifesto:
I must admit, it's remarkably convincing. Plus, Tau Day is actually my wife's birthday. See you all on June 28th.