INFO VISUALIZATION: What an awesome resource:
PHP/SWF Charts is a simple, yet powerful PHP tool to create attractive web charts from dynamic data.
Use PHP scripts to generate or gather the data from databases, then pass it to this tool to generate Flash (swf) charts.
PHP/SWF Charts makes the best of both the PHP and SWF worlds. PHP scripts provide integration, and Flash provides the best display quality.
Yeah, I'm not always a Flash fan, but in this case, I think it's a'ight.