http://dotnet.org.za/codingsanity/archive/2007/12/14/review-windows-xp.aspx
Best laugh I've had in a while. Very funny....and very true.
I recently bagged Vista (though I installed Win Server '03 instead), and am much better off.
Now....I DO miss Aero, more than I thought I'd miss it. It was cool looking. There are themes out there that attempt to mimick Aero when you're running on XP or Win 2003, but they look really cheap.
Win Server '08 features Aero, but I prefer to wait until it's officially released.