Popular scientific journal the Scientist launched results of annual survey “The best place for work 2008: Postdocs”.
Only 36% of postdocs were born in the country where they are doing their postdoc.
The best 15 US places:
Top 15 US Institutions Map:
Top 10 International:
and more statistics from the survey:
Article, slide show and survey results available on the Scientist web-site by free registration