Usually when you need a report for a given Group Policy object, you would launch the Group Policy Management Console, select the GPO and then select the settings tab that produces the report.
But what if you need a report for multiple or even all your GPOs you have within your Active Directory ? Going through each GPO and produce the report manually is going to take ages and is boring.
My colleague Rudi recently found a script that automatically creates GPO reports it finds within your AD. You can select them individually or simply report on all.