I remember an old video commentary, dating back to 1995/1996, where children from the US were asked to draw a map of the world, from memory; the same thing was asked of children from Russia, Europe, Africa, Asia.
Children from Russia could draw a complete map of the continents, most major islands, and several countries; from Asia, pretty much the same; Africa, too; and Europe, pretty much the same - except the most know countries were the European ones.
The children from the USA would more often than not draw a shapeless blob, labeled US (and in the best case, a few States in said blob) and another blob labeled OTHERS - or a few other blobs with labels such as PARIS, ITALIA, CHINA, COMMIES, CANADA, whatever. The best of them barely managed to draw a map depicting hard to recognize continents, no major island and hardly a country.
I don't know if the US education system has improved since then (considering the Creationist debate, something that even in the Vatican state looks ridiculous), but I don't think it's gotten any better.
It does say one thing though: when the guy said Americans are somewhat self-centered, he was wrong: they're COMPLETELY self-centered. Not that it's not true of other countries, but among developed democracies, the USA are probably the only ones that enforce it as part of their own system. I do have American friends - living in the US: funnily, they share my opinion.
Another thing: considering that Haiti got help from most countries in the world, and that it's really not too far from the US, showing up there meant: "not selfish". Self-absorbed doesn't mean selfish (eventhough both often come together).