Hello, tablet junkies!
Currently under development by iTT member, MaemoBox founder, and the creator of TabletOS andrewfblack is a Windows XP theme for the tablets. This is a promising beginning for a completely new look on the NITs.
Right now it is just getting started, but if you head over to this post you can grab a .deb and some more screenshots.
Very well done for what's there! Lets hope everything else added to this theme looks just as good.
(Oh, and by the way, check out MaemoBox and TabletOS, which is still in development. They both look promising from here.)