Another good use is carnitas. An authentic recipe though. I haven't made it in a while, but it involves some unusual ingredients that seem very unusual to those used to throwing them on a smoker with a rub.
From what I can remember it includes something along the lines of a real sugar coke, evaporated milk, an orange, etc...
I know there's more to it, but you deep fat fry chunks of pork butt with lard and then basically braise it. Or maybe it's the other way around. All I know is that they are fall apart tender with a crisp outside and more flavor than can legally cross the border.