Toms Hardware has a written probably the most comprehensive and detailed article yet on Windows Vista.  In 500 hours they explored almost every aspect of the new operating system. They conclude "Microsoft’s new Vista is surprisingly entertaining. The new look of the operating system is good, and lets it outshine its Linux and Mac OS competitors. One notices repeatedly while working with this software that Microsoft scoped out its competition very carefully."  You can read it over at Toms Hardware.