http://www.coupons.com/ has some nice coupons available now, including this one for $1.00 off of two 20oz bottles of Mountain Dew. This would be a good one to double during double coupon day!! Just check out http://www.coupons.com/ and click on the Beverage section on the left. If you do not see this coupon try changing the zip code to 90210.
While you are there, print off some of the other great beverage deals like $1.50 off of Boost Kid Essentials and $1 off of Minute Maid Juice Box 10 packs.