It only comes around every 4 years when the Olympics are on. As I am a Londoner and wish everyone in London good luck when it comes to July because for two weeks we'll all be in hell.
Thanks to 30 Rock and Kenneth the page we can celebrate Leap Day, so Happy Leap Day Williams to you all! Cry your eyes out for candy/sweeties and cigarettes!
(If you have no idea what this is, just type in 'Leap Day Williams' in google)