Sondre has a nice workaround for a very annoying problem with VS 2005 Unit Tests (aka Team Test) - When you run unit tests, the "Build" action is not performed on the unit testing project by default, so you have to manually invoke the build - which you keep forgetting to do. Annoying! Sondre's workaround will run a build on the current project, then build every project with the word "Test" contained inside it after the build is done.

Here's a direct link to the actual macro, but you will find detailed instructions on how to use it in Sondre's post.