Peter Gutmann has done an amazing analysis of the costs and issues involved with the "Content Protection" scheme in Microsoft's Windows Vista (slides).  Essentially, if you want to use multimedia, you can only use it how the movie industry says you can.  NetFlix has given in to that, producing (along with Microsoft) a tool that effectively strips your fair use rights.  It's amazing how we've all become criminals of the information age.  I guess it's only the information age for those who are willing to spend the money.