Plus aircraft and marine (I am currently entertaining myself listening to the Coasties and others on Marine band 16). Used to be able to listen in on cell phones too, but that has come to an end...

That legally came to an end years ago, but there were still technical ways to listen in if your into that sort of thing. You can also pick up all those little FRS and GMRS radios, say if the other team your playing paintball against is using them.