A cool tool for generating test data. From the project description:
Through a fluent, extensible interface, NBuilder allows you to rapidly create test data, automatically assigning values to properties and public fields that are of type of the built in .NET data types (e.g. ints and strings). NBuilder allows you to override for properties you are interested in using lambda expressions.
NBuilder is an open source project, hosted on google code
As stated above, this software generates data that can be used for testing when you need lists of random data.