Between now and the end of the year, you can get a free $20 Discover gift card by spending $200 on your Discover Card at select malls, per SD:

Get something extra when you shop at the mall this holiday season. Get a free $20 Discover Gift Card instantly by spending $200 on your Discover Card at select malls from November 1 through December 31, 2006. You can get up to five gift cards per Account for the duration of the program.

It’s simple. Take your receipts totaling $200 to the customer service desk of any of the participating malls by December 31, 2006 to receive your Discover Gift Card. Use it as a gift for someone on your list or treat yourself to something special.

The full list of participating malls can be found here.