Some unorthodox metrics

Human development Index (literacy, life expectancy, education, standard of living).

Major (and majority) languages spoken in the top 30 scoring countries. Ranked loosely by HDI score:

English
French
Japanese
German
Spanish
Italian
Korean

The 2007/2008 Global Competitiveness Report published by the World Economic Forum covers 131 countries and assesses the ability of countries to provide high levels of prosperity to their citizens. Country rankings are based on a variety of factors including infrastructure quality, property rights, ethics and corruption, judicial independence, government inefficiency, government deficit,
national savings, inflation, government debt, HIV/AIDS, infant mortality and many others.

Major languages spoken in the top thirty scoring countries. Except for Chinese these are also the majority languages of this group.

English
German
Japanese
French
Korean
Chinese (Taiwan, HK, Singapore)
Spanish

Mercer 2007 quality of living survey (215 major cities)

Top 50 cities

English spoken in 22 cities
German in 9
French in 5
Japanese in 4
Spanish in 2
Italian in 1
Portuguese in 1