PC vs. Mac 3
I'm trying to be fair. And I must say this is a tight competition.
Today Macs get one point because of their "Spaces" application which is basically a software that allows you to have multiple desktops in the same monitor. To see all your desktop areas you just have to press a button and click on the desktop you want or you can even slide from a desktop to another as the pages in the iPhone.
First time I saw that, it wasn't on a Mac. I saw it for the first time in Linux Ubuntu a few years ago, but it was a beta version. And now Apple added their touch of good taste on it.