Whats wrong with Unity, Gnome 3 and the coming W8 interfaces?
When no-one had internet and computers, the mentioned interfaces would have probably been most welcome. However, public school, high school, junior college, in fact, all educational institutions, public libraries and whatever else you can think of, have grown up with the conventional menus, with the tree of sub-menus having associated topics.
This means that the world will have to change. The world is more than just a group of tablet users, for whom menus are not practical. But with 22 inch monitors, who needs the menu-less interfaces.