I've been investigating NUnit recently and was getting frustrated by the amount of repetitive code you had to write for each item you wanted to test, so I wrapped it all up into some helper project and item templates. Then went a bit further and created a few code snippets to help as well.
I thought I'd make it available to you lot as I'm sure its something everyone sits down and has to write all the time.
The templates/snippets are all for VB.net but I'm sure you could adapt them for C# if you so wished, there seems to be a lot more demonstrations for C# out there anyway so I thought I'd try and even the balance.
You can download the vsi package containing them from my Visual Studio 2005 Tools downloads area.