One of the big problems with Unity, IMO, is that right-clicking does not
give you many options, if any. Mouse-over does more in most cases and Unity
is locked down. The way to change anything is through Compiz settings and
not through right-click and drop down menu. GNOME 3 is similarly
challenged. I like KDE's netbook interface much better. And there you can
right-click and can change just about anything.