Determination is a light weight IronPython scripting tool specifically setup for Microsoft Dynamics 2011, however it suitable for use with any .Net assemblies and MSCRM version.
Be sure to unblock the Zip file before use.
Licensed under Creative Commons Attribution 3.0.
Determination ships with assemblies from MSCRM SDK Version 5.0.14 (February 2013). You can update the DLLs directory to include other assemblies as required.
Example Scripts from Woodsworkblog: