UPDATE: My previous instructions were incorrect!
Today there is a Groupon for 3 Redbox rentals for $1!
There are already several thousand purchased, but you have until midnight Sunday night to get yours. Rentals must be redeemed by March 10, 2011. There is a limit of one per person.
1. Become a member of Groupon create an account, and login.
2. Visit this direct link to the Redbox deal.
3. Buy your deal and then redeem it!