Here's an interesting webpage with some really scary info about the HD Copy Protection schemes used in Windows Vista.
This isn't the first page to denounce the apparently merciless lockdown that Microsoft proposes. I personally think that it is a bunch of crap, and I'll be damned if I'll ever concede the point.
DRM is bad for consumers. DRM is bad for content producers. DRM is only good for content sellers and their cronies.