Hans Rosling's bubble charts

The king of this field is Hans Rosling, whose "bubble" approach to communicating massive chunks of data has earned him celebrity status on TED. Though his foci range from public health to economics, his practice can be applied nearly anywhere that data exists – simple and concise data visualizations can help people make sense of information and implement practical solutions to the opportunities exposed therein.
To watch the maestro at work, check out his greatest hits as compiled by The Economist.