Remember not to confuse "socialism" the political doctrine with "socialised" as in sharing costs across society. America does this for health (medicare), defense, roads, education, environmental health, etc etc etc. Europe is no more socialist than are obama's policies, that is to say, not very.
Socialism = public ownership of the means of production, anything that doesn't entail this is IN NO WAY socialist.
To "the eric conspiracy" below, you should bear in mind that the "europe" you're talking about nowadays includes romania, poland the old yugoslavia etc, I highly doubt your figures would stand if they only included the "old europe" say the nations of the EU prior to 1999. Its also worth pointing out that the scandinavian nations which have the highest tax rates and the most "socialist" policies have some of the best GDP/head and standards of living in the world.