As a developer / administrator, I'm always on the look out for tools to help me do my job. Power shell is just that. I don't think we've seen the impact of the product yet. When the light bulb goes off in more peoples heads as to just how innovative Power shell is, I think we'll see more interest.
I've recently picked up the following books on Power Shell:
- Windows PowerShell in Action by Bruce Payette
- Professional Window PowerShell by Andrew Watt
- Windows PeowerShell Pocket Reference by Lee Holmes
I recommend all of them.