Mono Options/NDesk Options
Simple, C# 3.0-friendly library for working with command-line arguments.  It’s too simple for what I need, but hey, it should work for some basic scenarios.

Website -> Virtual Directory Inheritance in ASP.NET
I ran into a big problem today with ASP.NET barfing over an application that was configured as a virtual directory underneath a website (which itself was running an ASP.NET application at its root).  This post helped me understand what was going on.