I know it may sound too good to be true, but really it is true no joke. By using RedBox DVD rental kiosks it's now possible, just watch the video 2:23. The site to go for codes is http://www.insideredbox.com/index.php/codes
Step 1: What Is RedBox?
Redbox Automated Retail, LLC was initially funded by McDonald's Ventures, LLC. McDonalds sold 47 % to Coinstar a year after Redbox split from McD's. The company operates automated DVD rental kiosks, primarily located at McDonald's restaurants (more than 6000) in additon to McDonalds Redbox is in around 100 clients. From Albertsons to Walgeens. Redbox's business model allows customers to rent DVDs for $1 per day, with no late fees.
basically this info was taken from:http://en.wikipedia.org/wiki/Redbox
Step 2: Now How to Get Free DVD's.
This may not work in every state. But I have done this many times and it still works for me. So how it works is basically what the video says by using free codes that allow for free DVD rentals to be made. the free Rental codes can be found at this site http://www.insideredbox.com/index.php/codes