Visual Studio - Always Show Solution
In Visual Studio 2005, if you have a solution open, with only one project attached to it, the solution file is not visible in the Solution Explorer window. This can be slightly annoying, since right-clicking the solution file from this window is a quick way to add another project (the alternative being to add one from the File menu). I'm not sure why it took me almost two years to notice this, but there is a setting under "Projects and Solutions" to "Always Show Solution". Enabling this, changes the behavior.
Before...

Change the Setting

After...
