I love that Unity launch panel hides itself when a window is over it, but when I move the mouse over to the left edge of the screen, the panel won't show itself so that I can launch other programs that are placed in it similar to the way Docky does.
A change has been made this month to reveal the launcher on left edge now (after a one second timeout).
You can revert to the previous behavior of launcher reveal only in the top left corner launching the
Maybe, if you just change the sensitivity, the dock could show up more easily. The higher the sensitivity the politer the touch to left side of the screen is required.