http://www.gapminder.org/
This is the neatest way yet to visualize data. Colorful bubble graphs set in motion. There are several samples... or you can use your own data. You could correlate golf scores to your age, or chart historical prices of any number of companies.
One sample graph measures infant mortality worldwide on one axis and personal income on another. It's fascinating to hit the Play button and watch it go. Another sample incorporates unemployment with the housing price index.
Everything works for free, using a Google gadget called Motion Chart.
We should all be glad that Google is a benevolent ruler, for they shall rule the Earth.
