Sony has just extended their promotional campaign in North-America to the end of the month. By buying a Playstation 3 before the January 31st you will be able to choose five Blu-ray movies from a selection of 18.
It doesn't matter what kind of Blu-ray player you buy. It can also be the 40GB or 80GB Playstation 3. This promotion is basically repeated after it ended in September 2007.
