Groupon has a special Redbox offer going today – Get three one night rentals for only $1. Since we haven’t been getting that many free Redbox codes recently, I think this is a great offer. It says that it’s available today and tomorrow, but if you’re interested, don’t wait! We never know if there’s a cap on the amount of offers that they are selling. Limit one per person, but you can purchase two more as gifts.