I find that Zenity really shines if the script is intended to be launched outside of a terminal window. For example, I have a script bound to Super+Y that open

I find that Zenity really shines if the script is intended to be launched outside of a terminal window. For example, I have a script bound to Super+Y that opens a youtube video inside a local video player. Before it starts the video it shows a zenity popup with the URL so I can confirm that it is correct.