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-statistics-report/
Graphical statistics report wordpress plugin create the graphical report about monthly user registration, monthly post, monthly comment, category wise post count in the admin. All the statistics will be display with the help fusion char. This is very useful plugin to trace your website statistics.
To see the report: