County level 2008 US presidential election returns.
Google Data Explorer
This interactive tool developed by Google offers a large amount of data, ranging from databases on public debt in Europe (in the screenshot) to education statistics in California. It is fully flexible so the user can select can choose between line, char graphs and maps, as well as the contextual information to be displayed.
The matrix chart divides the screen into a grid. Rows represent the values in one text column (e.g., political candidate) and columns represent another text column (e.g., states of the US). Each cell then shows a circle or bar that represents the value for its row/column combination (e.g., contribution to Hillary Clinton from New York).
World Bank Data Visualizer
The World Bank has created a complex visualisation tool to make available 49 indicators for 209 countries and 18 aggregates from 1960-2007. Data includes social, economic, financial, information & technology, and environmental indicators. The visualisation is completely customizable bubble chart in the spirit of 'gapminder' and the user selects the x and y axis dimensions as well as the variable that determine the size of the bubbles and the time point to be displayed.