Ubuntu: Setting the Win+D combination to bring up the desktop.

One of the most useful keyboard shortcuts that are set-up by default on Windows (although not widely known), is the Win+D combination, which minimizes all windows and displays the desktop. Ubuntu has this little icon on the bottom-left corner, but that was not enough for me...
This shortcut can be configured to work in Ubuntu in exactly the same way as with Windows, by following these steps:

1. First we need to make sure the Win key is mapped to 'Super'.
   System &rarr Preferences &rarr Keyboard &rarr Layout Options &rarr Alt/Win Key behaviour &rarr Super is mapped to the Win keys.


2. Set the Win+D combination to do what we want:
   System &rarr Preferences &rarr Keyboard shortcuts &rarr Hide all windows and focus desktop (which can be found under the category 'Window management').