One night free DVD rental at a Blockbuster Express kiosk with promo code GT11A. Expires January 31, 2010. Be sure to have your movie back by 9pm the next day, or you'll pay a $1 (plus tax) per day fee.
Find a Blockbuster kiosk near you here. Here in Wylie, it's inside the Brookshires. Not the ideal location, but still worth it for a free rental. :)