Have you noticed those red kiosks located in that uses kiosks placed in many supermarkets, drug stores, gas stations, and other locations. Those are for renting DVD's, called DVDPlay. You can rent one DVD for 99 cents per night. Of course, you can keep the DVD as long as you like, and are simply charged 99 cents for each day you have it. It is pretty simple, easier than going to Blockbust, at least I don't have to show my driver's license and wait in line (sometimes the line is not short).
If you want to save a few more cents, you can try to input some promotion codes. Here are some available on the internet http://www.insidedvdplay.com/codes
POPCORN worked for me, but only 50% off though. It is very cold this week at Bay area. So it would be nice to stay at home and watch a free movie.