It's the last day of 2009 and of the Double Os as well (unless you're pedantic), but more importantly it's the last day you can enter to win a spectacular Zelda prize pack.
How spectacular you ask?
The grand prize is a copy of The Legend of Zelda: Spirit Tracks, a Spirit Tracks t-shirt, a $1,000 Nintendo World Store gift card, a Zelda's "biggest fan" trophy and a white Nintendo DSi system personally signed by longtime Zelda producer Eiji Aonuma.
You'll have to live in any of the Americas (North or South) to enter. If you're interested and have the day free then go check out the official rules.
Quickly browsing through the entries page I notice that there seem to be 11 entries for the 11 finalists that will be choosing, so your odds are pretty good.