Brilliant and beautiful. If you need a dynamic chart for anything, I mean anything and can write a little php and mysql this is the answer. Though the plugin does most of the mysql on its own.
If your data is static. The flashCharts plugin is simple to install, configure and well documented. Copy an example, add your data and you will have a beautiful chart or graph in less time than it took me to write this review.
I spent four hours writing a little php application for a graph and ported it into joomla with jumi. I installed and configured the php option of this plugin in 4 minutes. Wish I would have seen it first! Every J developer should check this Plugin's documentation -- clear examples, known conflicts, work-arounds, all in one page! Bravo!