Jeffery Snover, inventor of PowerShell, makes point when Erik Meijer sits talks with him and talks about pipelines, monads and some things upcoming in PowerShell.

Here is the video:

Expert to Expert: Erik Meijer and Jeffrey Snover – Inside PowerShell

Highlights

• In Window 7, Windows Diagnostics are all PowerShell based
• PowerShell is the first shell to support transactions
• PowerShell optimizes the person not the CPU
• Integrated Script Editor is based on the VS 2010 Editor
• Covers how the Object Flow Engine works, it’s push based which is opposite of IEnumerable
• Begin/Process/End components of a script are stream oriented
• Parallel? Not yet, at the top level multiple Runspaces (A runspace provides a mechanism for hosting applications to execute pipelines programmatically in a well-constructed manner)
• Batch files are a disease you die with not of