Free Two-Liter Diet Dr. Pepper
Sorry, this deal is expired.
Diet Dr. Pepper now has a coupon for either a Free 20 oz. Bottle or a Free Two-Liter Bottle available. You simply have to register an email address. You'll get the coupon via postal mail a few weeks later. This is valid through 3/31, however it's set to expire after 2,000,000 redemptions, so don't hesitate.