I agree that Swede's often are english fluent and knowledgable, but to my ear, I still say the Dutch have the accent that is most 'american.'
I think that part of the reason the smaller population countries have populations with a high number of english speakers, is that many of their textbooks (particularly in college) are in english as it is not economically worthwhile to translate low volume books into a language spoken by a small population.
Good point. It also works the other direction: to have a high impact publication Swedes often need to publish their own works in English. Though I wish I could read Strindberg (or watch Ingmar Bergman films) in the original Swedish. Always loses something in translation.