Happy 3.14159265 Day

Yes, it is the one and only recently invented holiday for nerds. Well, besides talk-like-a-pirate day.

If regular old pi and pie don't fit your fancy, or if you've already stuffed your brain and/or face full of them, don't forget to add these pi(e)s to your fetivities:
Pi,
American Pie,
Better American Pie,
Pie Pie Pie,
And for the daring, Man Pie.