I've verified that this works in Columbus and it appears to be working nationwide
(thanks for the link, Smelly Pirate). Click here
to get a coupon for a free 1600 MS Point card
at Target. It says that you need to purchase Xbox hardware, but most Target stores have been allowing a game purchase to count.
Check out the clearance area. I found Prince of Persia there for a reasonable price. Take the game and 1600 MS Point card to the register with this coupon and get the card for free. That's enough to get you Castle Crashers, Shadow Complex, 4 avatar pets, or something else you've been holding off buying in the Marketplace.
Or, if you were looking to pick up a new controller or rechargeable battery ($13), take the coupon in for a free $20 item. Take advantage of the deal quick because the coupon expires on December 24.