The other day I got my hands on a Vista powered pc. Only because my mate couldn't get online with it, because the dns server wasn't configured by Vista. Apparently his router was set up wrong (worked on xp, works on Linux). So I had a good look round the system, and frankly this Vista Home Premium (the home edition with bling) Looked a lot like xp with a nice svg theme and the whole rotaty window thing. The only things I found of any use at all was:
1: The command prompt was easy to get at in order to use ipconfig because the graphical version gives you no information.
2: The Live review of minimised windows along the task bar.
IMHO Compiz has more bells and whistles and Mac OSX looks better and more intergrated than Vista ever will. Add to that the hardware issues that are about to arise and start kissing good bye to Windows market share as people get sick of the gui. Not instantly but slowly.