In a new article at http://www.DesktopLinux.com/articles/AT5747451177.html titled My Desktop Odyssey Update, the author gives Knoppix a score of 8.3 out of 10 -- one of the highest scores of any Linux distro (he gives Windows XP a 9, but read both articles before the flames begin).

His points are well-made -- basically, that Linux has a ways to go on the desktop -- and except for a few typographical errors that the editors should have caught, the article is very well written. Both articles are worth a look.