The Pi Pie pictured below is a cherry pie with a cutout of the mathematical symbol pi in the center and the first 23 digits engraved around the crust (some of the 5s and 2s are backwards).  It was made on Pi Day, which is March 14 (3/14). Flickr has more pictures of Pi Pies.  Finally!  Another entry in the math category!  (via Neatorama)
#math