Powershell
As Microsoft begins incorporating PowerShell into more and more products, most admins are wondering how to get their feet wet. The way that I've been recommending is to stop using cmd: install PowerShell on your desktop and don't ever launch cmd.exe again. PowerShell has aliases built in so that most of the commands available via cmd work without any changes. Thus, instantly, you're using PowerShell without actually having to learn anything new. Then, slowly you can start investigating some of the awesome power available in the aptly named PowerShell.