Not really. It certainly looks better than most default Linux looks (but they in turn look better than the XP skin designed by a five-year old) but you'd need a very modern PC to run the Vista effects while the OSX and Linux ones will run on much lower-spec computers. Beryl runs on my 2.5 year old laptop with complete impunity, my laptop would struggle to run the Aero effects comfortably and I think it would even have problems running Vista comfortably in general. Quartz runs on old (according to the official specs, on 16MB graphics cards) systems fine too.