I'm working on my Policies (SQL Server 2008 Policy Based Management) for my environments that I manage. I use them to check the maintenance, show system state, and in some cases, to prevent actions from occurring when I don't want them to. I was asked if Microsoft provides any "out of the box" Policies, and the answer is "yes".
You might remember the SQL Server Best Practices Analyzer, or BPA. While that tool is still around, many of the "rules" it used are now Policies that you can either import or just run from the file locations. If you took the defaults when you installed, they are here for 32-bit systems:
C:\Program Files\Microsoft SQL Server\100\Tools\Policies\DatabaseEngine\1033
And here on x64:
C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Policies\DatabaseEngine\1033
I normally run them in a PowerShell script, and then use the results to do something else. Here's the command on my system that I use to check that the data and backup files are on different drives, a common best practice: