Gapminder is a flash-based tool for creating animated charts based on various parameters and indicators, including geographic areas. Here’s a TED talk showing examples of uses by its developer, Hans Rosling:
Up until recently, you could look at Gapminder charts for specific datasets at the website, but not create your own. Google, which bought the Gapminder technology in 2007, recently released a Google Gadget that lets you create your own Gapminder charts that can be embedded in a web page. You’ll need a Google Docs account, and also need to add the “Motion Chart” gadget from this web page. Once added, it can be accessed from the charts/gadgets button in a Google docs spreadsheet.