There are a number of interesting charts - familiar to those who keep tabs on this stuff, but of interest to those who don't - here are two that I thought were particularly instructive.
The first examines the correlation between income inequality and intergenerational earnings mobility and finds that the US is high in terms of inequality and low in terms of mobility (a high elasticity means that incomes are closely related across generations).
The second is the relative inequality (high) and how the US tax code addresses the inequality (less progressive) than a number of other comparison countries. Germany, for example, has higher pre-tax inequality (blue) than the US, but much lower post-tax inequality (red) than the US.
Germany's economy, by the way, has been the real superstar of this current economic downturn.