Another one that I saw today:
Sony rootkit with some particulars
Here's an interesting bit of it:
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MediaJam installs a rootkit called Aries.sys, which is misnamed as ‘Network Control Manager’ to reduce the chances that you will spot it running on your PC. Presumably Aries.sys is digitally signed by Microsoft, however Microsoft, First 4 Internet and Sony BMG are reluctant to either confirm or deny this. Because Aries is a rootkit it is installed at a very low system level which renders it invisible to anti-spyware software. More worryingly the rootkit is used to hide any code that starts with the characters $sys$, which allows Sony BMG to hide software within Windows to prevent its CD contents from being ripped.
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