I use a combination of F# scripts and PowerShell. Anytime I need to do data manipulation, code generation, or anything hard core development related I use F#.

I use a combination of F# scripts and PowerShell. Anytime I need to do data manipulation, code generation, or anything hard core development related I use F#. I could use PowerShell for this, but I'm more comfortable and feel I have more control with fsx scripts. For all the server related tasks or automated build tasks I use PowerShell. We're a heavy MS shop, and I get that it may not work for everyone, but we leverage so many MS technologies that it just makes sense to go with the flow.