"The British think they're important because they owned most of the world at some point" How's that again? Because we trounced a bunch of boomarang/stone/spear throwing natives (Australia, Africa, Canada, the Caribbean) with carbines and cannon? That means we are justified in our arrogance? How much of the world today could stand against a marine carrier battle group other than UK, Russia, China, and maybe France? Just as Britain was then, the US is now the ONLY superpower around. So by your logic their entitled to the sense of superiority ascribed. Your supporting the case that people rasied in glass houses shouldn't throw stones, but you probably can't see that.
I also live in the US and work for a global company. For the most part Americans are no different than any one else and if you get to know them they're pretty decent people. They seem arrogant to us, as do the French, the Germans, the Japanese, etc. And we seem arrogant to all of them - Platini isn't trying to kick us out of Europe just because the CL always ends as a matchup between ManU, Liverpool, Chelsea or Arsnal. They kicked us out once before because we weren't the most humble of guests - remember?
I live here and I like living here (AC 15:54 if you don't like it - go home). But comments like "oh please" just make it harder for ex pats and subjects of England/Britain/UK/Her Majesty's realms and dominions, et al. should not be denouncing others for being arrogant.
Please keep it to the tech. At least there we can be proud since the Iphone is ours, at least according to Gordon ;)