Shortcut Keys which you did not know

Windows Ctrl+Shift+Esc :-Task Manager Winkey+R :-Run Dialog Shift+F10 :- Equivalent of Right Clicking Ubuntu Ctrl+Alt+Backspace :-Reloads current Sessions (Easy way of logging out) Alt+F2 :-Run Dialog Shift+F10 :- Equivalent of Right Clicking Crtl+Alt+Shift+F10 :-Black Screen of Death