Since Fedora 12, the “Show Desktop” button that was lurking in the bottom-left corner of Gnome has been removed, as described in the release notes.
As I often use this feature, I wondered how to get it back…Anvil on #fedora-fr pointed me to the System > Preferences > Keyboard Shortcuts configuration window; it’s amazing how many shortcuts I wasn’t aware of exist in there.
This feature is simply available by pressing Ctrl+Alt+D.
You can also get the button back on the panel: right-click, Add to Panel, ‘Show the Desktop’. It’s just an applet.
Thank you! I’ve been wondering how to that with gnome shell and Fedora 12–no more manually minimizing all the windows