Further to the blog post I posted yesterday about the approach to generating test fixture data for automated tests that my team has adopted I have open sourced a base class and other supporting code infrastructure to quickly, tersely and maintainably generate fixture data in a consistent way.
I have released this library to GitHub and NuGet under the name NTestDataBuilder.
The GitHub page has a bunch of code snippets that will get you started quickly. Read my previous blog post to get a feel for how I use the code and in particular how I combine the approach with the Object Mother pattern for best effect.
Enjoy!