Indeed, I am a Mac user, after using Linux and BSD from 1994 to ~2007. But I have a Linux machine for work that requires plenty of (affordable!) CPU power and memory. I recently installed Ubuntu 11.04 on that machine, and this is one of the very first times I thought "they get it". Unity is a fresh breath of air compared to the old 'let's hide applications deep in menus'-paradigm. Unity makes applications quickly accessible and manageable. It's not there yet, but it is going in the right direction.