According to eWeek Mark Russinovich apparently won the "war" against Sony in the combat against the cloaking methods used in their DRM software (Source).
If you haven't followed the story then go to his blog and read the first post Sony, Rootkits and Digital Rights Management Gone Too Far - there are a lot of interesting insights and comments to his his first and the following posts on the subject (1, 2, 3)
UPDATE - Mark has written a follow-up story after Sony's retreat Sony: No More Rootkit - For Now also Microsoft is going to include detection and removal of the rootkit in Windows AntiSpyware and the upcoming Windows Defender (Source). Congratulations to Mark and all who will benefit from his fight !!!
UPDATE #2 - Someone actually sat down, read the EULA and summed up the result of it; check out these examples -
If your house gets burgled, you have to delete all your music from your laptop when you get home. That's because the EULA says that your rights to any copies terminate as soon as you no longer possess the original CD.
You must install any and all updates, or else lose the music on your computer. The EULA immediately terminates if you fail to install any update. No more holding out on those hobble-ware downgrades masquerading as updates.
Sony-BMG can install and use backdoors in the copy protection software or media player to "enforce their rights" against you, at any time, without notice. And Sony-BMG disclaims any liability if this "self help" crashes your computer, exposes you to security risks, or any other harm.
If you file for bankruptcy, you have to delete all the music on your computer. Seriously.