Via Arno I ran into an interesting set of blog postings about PowerShell and what you can do with it in SharePoint. To be honest, it is the first time I noticed this and it seems to be quite interesting in some scenario's.
What is PowerShell?
"PowerShell is 'DOS for the .NET generation' (c) and its a fantastic way to both interactively control SharePoint via its Object Model from a command line and to create scripts that can be run in a batch."
Anyway, to give you an impression and some hands to start with: