Did you know you can use PowerShell to create an Excel list of all of the rules in your imported Management Packs? It's pretty easy -- just follow these steps:

  1. On your Management Server, open the Command Shell by clicking Programs->System Center->Command Shell.
  2. In the command window, type: 
    get-rule | select-object @{Name="MP";Expression={ foreach-object {$_.GetManagementPack().DisplayName }}},DisplayName |

    sort-object -property MP | export-csv "c:\rules.csv"

 Open the file C:\rules.csv in Excel and expand out the first column to get a view like this (click for larger picture):

 

The export-csv cmdlet that the output is piped into is a handy one to know about. You can use it to use to put information extracted with PowerShell into a comma separated format that can be read by Excel.

 

[Edit: Updated first line to clarify that this outputs rules for Management Packs that are already imported and to include link to larger picture.]