Many users like the look of Mac OS and whatever they say, me too. Why I do not know, I suppose that something has to do with the distinctive, elegant and sober touch of the designs of Apple .
But anyway, I like many things about this company but not its prices, or its closed way of offering it, so if you are like me and besides that, you use Ubuntu 11.10, this theme for Unity It can come in handy for you.
You can download it from Deviantart.