This is from five years ago, but it's interesting:
the transcript of an interview Steve Meretzky of (among other things) Infocom gave to BBC Radio 4 about the creation of The Hitchhiker's Guide to the Galaxy adventure game. I had this game many years ago on the Amstrad PCW, and even today I can still recall the feeling of utter elation when (with, I admit, a magazine hint or two) I finally managed to get hold of the Babel Fish...