Blockbuster Express has 1 Free rental with the following codes:
These expire 9/16:
33TTDR8 - 23PGAR7 - 52KRVF7 -48RMAQ5
79AGSF6 - 48TPLD5 -26MMKC3 - 99JMMF9
These are also still available:
These expire 9/12:
75TTDR3 - 34PGAR2 - 72KRVF5 - 29SPNF9
38RMAQ4 - 89AGSF7 - 83TPLD4 - 76DMNP2 - 68MMKC2
This one expires 9/11:
This one expires 9/15 and is only valid at a 7-eleven kiosk:
These are also still available and Expire 10/9:
I have not had a chance to test each of these codes yet, but you can try them online before your go to the kiosk to rent them and see which ones work.
You can look for your closest Blockbuster Express location HERE. You can also reserve your movie on-line and use the FREE code for your reservation.
Note: You will notice some of the hot releases (shows a flame on the DVD) on Blockbuster Express for $2.99, this promo code will only work on the $1 rentals.