Somebody has to stick up for the Mac here, I guess. Count me in!
I've always been a Mac fan, but also a Unix fan, so OS X is geek nirvana for me. I have to use Windows at work (alongside Sun workstations), and everything just seems to be in the wrong place. (I'm one of the dorks who will take the Windows taskbar and move it to the top of the screen, so the Start menu is in the "right" place!)