This plugin will display the graphical report for admin about post count, user registration, comments posted activity.
Check official website for Live demo http://www.gopiplus.com/work/2010/07/18/graphical-admin-report/
Graphical admin report wordpress plugin is a simple admin based plugin to display the user registration count, post count, comments posted count to admin with graphical representation. Fusion chart has been used to generate the graphical report. This is fully admin based plugin. Just install the plugin and activate and go to plugin dashboard page to see the reports.
Features of this plugin