Drag out your Labor Day holiday a little and relax tonight with a free movie rental from Blockbuster Express! Here is a list of free $1 rental codes that are valid through 9/12: 75TTDR3, 34PGAR2, 72KRVF5, 38RMAQ4, 89AGSF7, 83TPLD4, 76DMNP2, 29SPNF9, and 68MMKC2.