And I was just showing my kids how to make a Half-Life 2 map the other day... Kent has posted a link to new information around Half-Life 2 modding on Coding4Fun. This is really cool.
Update 1 for today
The C4F item mentioned yesterday is now live. Not much now, but very cool stuff coming soon. The Half-life Mod Spot on Coding4Fun. It's what Visual C++ was made for ;)

We'll have a headline up on the Visual C++ Developer Center soon.