Use code SNSV25 to get a free DVD rental through Redbox, those large red machines stationed near the entrance at many chain grocery and drug stores. The freebie is for one night; rentals are usually $1 per day, so if you keep it more than 24 hours you'll pay. You can also reserve a movie online and then pick it up at the store.
If that code doesn't work, try RBXLUV10, which expires tonight, Jan. 11 at 11:59 PM tonight. Also give RBX2NITE and FREE45W a whirl. Most of these codes can only be used once per credit or debit card.
Find a Redbox near you. Unclear when this code expires, so use it soon!
Free Redbox DVD rental