Vista makes me sad
MS will tell you that Vista is the next great thing in every way, it took billions of dollars to develop, millions of man-hours, and undoubtedly will be the best selling OS ever launched. The problem is that Vista brings almost nothing to the table that can't be described by as three year old as "shiny".
Let's look at it this way, ask yourself what good new features Vista brings to the table. Most will respond that it has Aero Glass, a really pretty UI. How may other things does it bring that are positives? I can't honestly think of one, and I'll bet if you ask the next ten people you run into, they won't be able to tell you any either.
Repeat the same exercise in the negative, what bad new things does Vista bring? Massive crushing DRM infections, unacceptable licence terms, bloated hardware requirements, and a list of cut features long enough to paper your bathroom.