Receive a $20 Discover Gift Card for every $200 you spend on your Discover Card at over 160 participating malls nationwide.  Valid through 1/4/2009.  Details and mall locator here.  This is essentially 10% off in addition any discounts you already get in stores.  Also, don't forget about the American Express deal with Walmart here too.

(Originally posted two weeks ago, this is just a friendly reminder.)