The Noisecast was among the first to try out the new experience and even has a few tips on how to get it for yourself, although it didn't work on our PS3, even after uninstalling and reinstalling the app to get the latest version.
Mark Russinovich of SysInternals did a detailed analysis of a "rootkit" (their word, not ours) he found on his PC, and discovered that, not only was it surreptitiously installed when he played a protected CD, but it also hogged system resources and integrated itself into Windows so deeply that uninstalling it disabled his CD drive.