As a .NET developer you’re guaranteed to have at some point run into the “Object reference not set to instance of an Object” message, or NullReferenceException.
Ever had this application that just crashed or malfunctioned in a Production environment ? And whatever you tried, it wasn’t reproducible in Test ? Or perhaps it was just slow in serving some pages (web application), and you wanted to see the actual SQL your Object Relational Model (ORM) generated and sent to the database ?