To truly appreciate PowerShell you have to suspend normal thinking, and instead place your brain in a Zen-Like trance. You need to bring to the front of your mind the worst administrative job, your most repetitive task, then believe that PowerShell commands could solve that problem.
Back to reality. Only you can employ PowerShell to solve your computer problems. Whether its an administrative task, or an operating system predicament, it would be too expensive to hire someone else to create a script on a task-by-task basis, therefore your salvation is down to PowerShell.
Naturally, PowerShell encourages the scripters time honoured technique of copying someone else's code, and then modifying to suit their computer. An extra tool with PowerShell is the GUI scripting technique. I have heard that Microsoft is threatening to provide special buttons on Exchange 2007's GUIs; their idea is reveal the code of the commands that you are executing. To complete the plan, you cunningly dissect the script, add extra commands, and then execute the modified code from the PowerShell prompt.
List the version numbers of all processes on all the servers on the local subnet.
The result is a small list of all processes which have different or exceptional version numbers. You can investigate this information and thus solve the problem of why one server is running slowly.
As a Windows Server administrator, you will see lots of flashy examples of what PowerShell can do. At first you may think, 'hmmm… good but I won't be able to create that stuff'. What I offer you is the dream that you will be able to create that script 'stuff'. It won't be easy, but after a while, PowerShell will be only as difficult as a VBScript, DOS batch files, or what ever you have dabbled with before. The benefit will be the awesome power. That ability to issue instructions that do just what you have dreamt but not been able to achieve by GUI's or other utilities.
Every scripting language promises the earth. With PowerShell I say, firstly it's straightforward to get started with basic PowerShell commands. Secondly, if you put in no more than average effort, you can create PowerShell instructions that will solve your most difficult server administration problems.