Gapminder

An amazing interactive Flash implementation shown here of scatterplot graphics related to world development. Multiple dimensions, variable transformations, geographic anchors, time series visualization, etc. An outstanding interactive graphic!

World's Income Distribution

An interactive Flash demonstration showing the distribution of the world's income and the percentage of the world's population that falls under the poverty line of $1 a day and how it changes over time and by region.
From www.gapminder.org

A 6-Dimensional Conditional Slice

Here is a graphic from the US Geological Survey via the World Wildlife Fund. It shows 6 dimensions of data across a conditional slice of the US at latitude 35% N. Similar to an earlier post of rainfall.