When I was Windows user it was natural to use Windows Key to open main menu so when it became time to switch to Ubuntu (I also tried other Linux distros as primary OSes for my dektop) it felt little bit frustrating Windows Key is useless there. Below is the one-line command to bind your windows key to Gnome menu (Ubuntu main menu). Hope this would be appreciated by other users who ever though about this “problem”.
Open Gnome Terminal and copy/paste the following line there and then press enter:
gconftool-2 --set /apps/metacity/global_keybindings/panel_main_menu --type string "Super_L"
Now press Left Windows Key to open Ubuntu Applications Menu: