The Gapminder Graphs allow you to unveil the interactions between indicators in the OECD Factbook over time. select any two indicators for the axes in the graph, and the size of bubbles reflect the size of a third indicator of your choice. Play with time. Select countries and track and compare their performance.
Swivel is a website where people share reports of charts and numbers. Swivel is free for public data, and charges a monthly fee to people who want to use it in private.