Recently my friend sent me an interesting link to an application that makes your ubuntu look just like Mac(here it is http://lifehacker.com/5665765/macbuntu-makes-your-linux-desktop-look-like-mac-os-x). I installed it successfully, but have problems with links in places and the link to nautilus in the dock, they do not work, and also strange duplicates in places. I think later I will figure out how to fix it.))
But still I enjoy it very much.