I want Windows+d to bind to "show desktop" as used in Windows but Keyboard Shortcuts doesn't work in this case.
And I found from here How come pressing Super+D doesn't show my desktop?
There's deeper setting.
Run gconf-editor (at command line)
and went to apps -> metacity -> global_keybindings and change "show_desktop" from "
And I have also binded "run_command_terminal" to "