Over at the Hey Scripting Guy Blog Sean Kearney is filling in for Ed Wilson with a nice series of blog posts and tips on how to use Powershell in Orchestrator

Here is a collection of links to the posts:

Systems Center 2012 Orchestrator and PowerShell: Part 1

Systems Center 2012 Orchestrator and PowerShell: Part 2

Systems Center 2012 Orchestrator and PowerShell: Part 3

Systems Center 2012 Orchestrator and PowerShell: Part 4

Systems Center 2012 Orchestrator and PowerShell: Part 5

PowerTip: Use PowerShell to Access Orchestrator Variables or Data

PowerTip: Publish Data to Orchestrator Data Bus

PowerTip: Trapping Variables Within a PowerShell Script in Orchestrator

PowerTip: Copy Your Script to Notepad Before Editing in Orchestrator

PowerTip: List Runbooks with PowerShell