I have been using them for a while and must say they are very cool.
Free movies on Monday, $1/day every other day and right in any of the supermarkets I shop in.
You can check availability and reserve them on-line. (Except for freebies)
I know you Blu-Ray folks don't like them, but blu-Ray is coming, soon...
If you haven't tried them, go to redbox.com and find one near you and check out the movies available.
Then get a bunch of free rentals.
Your first time, use REDBOX. (Only for new members/credit/ATM cards)
After that, DVDONME and BREAKROOM will get you one as well.
New free codes every Monday and more at
http://www.insideredbox.com
Senor Cheap Bastard approved!