You want to see a meaty interview with Nicholas from Portal Prelude? Well look no further than here on halflife2.net where I talked to Nicholas about the making of Prelude and a little bit about the story behind it. Here is a little taste of what to expect:

Chris - How do you feel fans of Portal are going to react to seeing other NPCs in the game?

Our testers were not that annoyed. Because there's no GlaDOS, and because it's in the past. We needed to find something a bit more "realistic" and "familiar" to talk with the player. The former human employees of Aperture Science were a really good idea, because basically, we never really see them during the test. You hear them, and you know they're watching you, just like if it was GlaDOS.

Check out the whole thing right here.