Sony
A lesson in how not to treat your customers. Sony added a piece of software to a number of their cd's, which turned out to be quite a security risk for it's users. Apparently it allows any Web page that the user subsequently visits to download, install and run any code that it likes
. More in this Slashdot post, Bad Day To Be Sony. A boycott has already been started.
Find out more on Extended Copy Protection at this Wikipedia page. I always try to avoid buying discs with any kind of copy protection. There's little else you can do as a consumer. And finally there's an analysis on businessweek.com, called Sony BMG's Costly Silence.