S B This is a *fantastic* product for Microsoft .NET developers. It allows prototyping and executing code expressions, statements, and programs. It is powerful enough to support database connections and queries directly. It will also show the resulting IL code, the lambda expressions for LINQ to SQL queries, and it allows you to "dump" to the screen intermediate results. It has lots of references and examples to help learn the language and LINQ.
The intellisense add-on is effective, intelligent, infomative, and well worth its cost. A BDJ discount would be sweet.