A Cost Analysis of Windows Vista Content Protection. Widely blogged for the phrase, "The Vista Content Protection specification could very well constitute the longest suicide note in history." I'm only just now getting around to it, and it's worth a read. The implications for computer hardware will impact non-Windows and Windows users alike.

Also worth noting for the quality of the writing. It benefits from the latitude to be a bit snarky, but the technical explanations are clear and concise.