click on try free trial and type in 92823b for the promo/gift code. You can cancel it tomorrow for all I care. It's a free two trial if you actually want to try it, but whatever.
From a friend of mine that works for them. www.blockbuster.com, obviously.
Full disclosure: His boss is going to give him the day off to go see transformers for handing out promo codes, so technically he does benefit from this.