As the name implies, they are flash charts, what except JSON data. There is a wonderful Python lib that makes it very easy to use OFC in a Pythonic way:
http://btbytes.github.com/pyofc2/
I second this recommendation. If you want to see it in action (though with PHP), check out piwik.org (the open source (Google-esque) analytics program.
Agreed. PyOFC2's graphs have better interactivity than the other options - being able to see values at a specific point where the mouse cursor is is quite liked by my users. There are two distribution sites: one has far more sample code.
As the name implies, they are flash charts, what except JSON data. There is a wonderful Python lib that makes it very easy to use OFC in a Pythonic way: http://btbytes.github.com/pyofc2/