I find that a lot of applications do not need to show the menu most of the time. For most users, in my experience, the menu bar need only be shown some of the time (with some exceptions such as word processors and large programs). Toolbars are usually much more important, as are keyboard shortcuts.<p>A right-click on the window decoration/titlebar to show the menu would be a much more elegant solution for many applications. This interaction with the window manager could also introduce some interesting application-specific window management, such as "arrange to fill screen" for gnome-terminal, or "optimize width" for Firefox, for instance.