It has multiple desktops in the best implementation I've seen so far. I use four stretched horizontally. You can have more horizontally, vertically or in a grid. You navigate between them with Control-[Arrow Key] or by using the icon on the menu bar. You also aren't likely to get lost amid all your desktops. The current content swipes off and your new desktop content swipes in (direction depends on the direction to the new screen), and an overlay animation at the bottom of the screen whenever you switch shows where in the larger pattern of desktops you're coming from and going to.
I'll have to check that out. I admit, I haven't played with my MIL's Mac enough to really have any idea what I'm doing. So far, I like KDE better, but I'm open to change. :-)