Over at Computer & Video Games you can find a Q&A with Valve's Marc Laidlaw. Questions focus on the Gordon Freeman and G-Man characters, and characters cut from the first Half-Life.
Do you often return to your old development and plot ideas, then?
Marc Laidlaw: Well, every now and then something will come up and we'll be like, 'Oh, don't you remember how we tried to do this in Half- Life, but we just couldn't figure out how to make it work?' So yes, we do still pick stuff out of the mix and make it work. I mean, there's a scientist you hear a lot in the test chamber in the early part of Half-Life, and he's never reappeared. And we've finally worked out a place for him where he's been all this time! It's been pretty fun figuring out how to bring that guy back.