The date today is 6/28, which is Tau Day. The number Tau is 2pi, or 6.28 (followed by many more decimals). Geek Are Sexy has an explanation of tau, which is kind of like pi, only more so. And since tau is 2pi, you should celebrate Tau Day by baking two pies. One for me, and one for you. And not to throw at each other! Link
See also: The Pi is a Lie