I found these in one of my local circulars. Its for those Redbox rental kiosks usually in supermarkets. I used it last week. Even w/o the coupon these machines are awesome....$1.00 per night rentals! Im not sure tif they are just East coast but it's worth the try.
Week of 10/25 - 10/31 - enter code REDBOX6
Week of 11/1 - 11/07 - enter code REDBOX7
Week of 11/8 - 11/14 - enter code REDBOX8

(not sure if its case sensitive)

Enjoy!