Today I have just released the first official version of my LinqPad Utilities for Microsoft Dynamics plugin library.
I use this tool in my everyday life working with CRM and its gradually grown in to a fully fledged tool.
It allows you to configure a number of reusable CRM Connection Strings to connect to Microsoft Dynamics (all versions) and has a number of useful utilities for working with Dynamics.
Feel free to download and try it.
To begin with, you will need LinqPad (which is free, but you can also purchase a license) from the following site.