Scoble tries to explain (via this blog) why Vista instead of XP. He lists a bunch of mostly - to be brutal - dull reasons. Kernel changes, new fonts, better UI.... yada yada yada. There's really nothing compelling there. Yes, my objection to PVP-OPM is not going to sweep the world anytime soon, but there's certainly nothing in that list that's going to convince me to ignore that and move ahead, either.
In day to day terms, working with Windows, what will Vista do for me that XP won't? As part of that explanation, I'd really like to hear "won't prevent you from watching content you own legally on your existing hardware". Oh, and this little escapade with Verizon didn't fill me with confidence either, btw...