Windows 8 the only Windows with Windows
This is actually just a fun little thing I have noticed and a post on this forum made me remember to write it up here.
Windows 8 is the only Windows with actual windows.
Think about your start screen as a wall and each live tile is a Window. You can glance at each tile (window) and see a little bit about what is going on in that window. If you approach each window you can get a more in depth view and see everything that is happening. You can even move a little bit to the side and view two windows side be side.
This works far better in this metaphor than the desktop. I just thought it was an interesting thought as some people complain the Modern UI does not make sense with Windows when it actually really does.