I heard something about Macubuntu and want to try.
Is there anyone using macubuntu and what do you think about it? :)
I found this amazing tutorial on 5 steps to transform your Ubuntu to Mac OMGUbuntu - 5 Tips To transform Ubuntu To MAC
Then , I found a nice splash screen/boot screen to make Ubuntu feels more like Mac . Its a splash screen theme from plymouth . Enjoy =) UbuntuRoot - Plymouth Mac OS X Splash Screen
You could try Mac4Lin, it's a good transformation tool. http://sourceforge.net/projects/mac4lin/ Instructions http://www.howtoforge.com/mac4lin_make_linux_look_like_a_mac
A couple of ideas:
Docky will give you a (vaguely) OSX-like Dock. You can install it via Software Centre (in 10.10 at least). You can then remove your bottom panel and launch Docky.
You can get the menus-in-top-bar thing of OSX by right-clicking in the top panel, clicking "add to panel", then adding "Indicator Applet Appmenu". You can then delete the Main Menu from the left-hand side of the top panel, and move the Application Menus to the left-hand side.