Overview: Can't use the keyboard to choose the Dash when mouse is on a window
On the Activities overview, you can select application launchers in the Dash by pressing Ctrl+Alt+Tab. But, if the mouse is hovering over a window when you do that, keyboard focus will immediately return to that window. This makes it impossible to select the Dash with the keyboard unless you move the mouse to a blank spot on the screen, at which point you may as well just click the Dash. cannotDash