Deep Discount is at it again. They're having their semi-annual 20% off sale, which will let you take off 20% off all DVDs, Blu-ray discs and UMDs in their collection. They have fairly low prices throughout the store, and with an additional savings of 20%, PSP bargain-hunters are sure to find something they want. Simply use coupon code USATODAY -- not only will you get an additional discount, but you'll also get free shipping. We were able to pick up Sin City for only $7, the perfect price for a movie on the go.