Make your Linux Gnome Desktop look like a Mac:
http://sourceforge.net/projects/mac4lin
Instructions here:
http://www.howtoforge.com/mac4lin_make_linux_look_like_a_mac
This is what my desktop like before:
And I got this far and gave up:
I’m all praise to the folk who put all the work into this. But, having a Apple logos on my Gnome desktop just seems odd. If you want to get a desktop that looks like a Mac go for it, but at least for me I don’t see the point in making my Linux desktop look just like a Mac. If I want a Mac I’ll get a Mac (and probably run Linux on it).