Windows PowerShell came out last year and got great reviews from many .net bloggers (Hanselman comes to mind). It seemed to be touted as a great new utility that somehow made everything that you would ever do on the command line easier, and integrated with .Net. However, the more I read about it, the more it seems to be a tool that is great for IT professionals, and not much use for developers.
Do you use PowerShell in your dev work? If so, how? Is it worth learning?
Note: After seeing the responses so far, I think it is valid to conclude that PowerShell can be very useful to a .Net developer. However, there is no one answer below that I can label as the answer (so please forgive me for not doing so). I am voting up each answer that I have found helpful. Thanks for the responses!