Just sifted through my email and found an email from last Wed that gives a code for a Free Rental from the Blockbuster Kiosk. Unfortunately it states it is only good last Wed and Today.

Here is the email:
Wednesdays Only First Night Free!
Use Promo Code: G211A2
Simply type this code into the kiosk when you rent your next DVD. It's that easy! This offer is only good on Wednesday-use it any Wednesday in the next two weeks!
Offer good for rentals on Wednesday 01/27/2010 or 02/03/2010 only. One night free, additional charges per day apply. Limit one per customer. Limited time offer. May not be combined with any other offer. Rental terms and conditions apply. Not valid at Blockbuster store locations.