PowerShell Tips for SharePoint 2007 and STSADM Lovers

Here is a quick guide for PowerShell tips in SharePoint 2010:

http://www.powergui.org/servlet/KbServlet/download/2812-102-4534/SharePoint2010PowerShell.pdf

And this Technet article gives a complete mapping of STSADM commands with PowerShell Commands:

http://technet.microsoft.com/en-us/library/ff621081.aspx