Get Lamp is currently available for free to watch on YouTube. I’ve been out of the scene for a while, but last I checked you had to buy a copy to watch it.
It is very interesting. I wouldn’t say there’s a lot or really any new information in it, but it is neat to see the interviews with the original Infocom people. It was also kinda cool to see the regular modern-day IF authors–I’ve had email conversations with some of them and it’s cool to put a face to the name.
While you’re there, the related videos are also worth watching. Jason Scott’s the Race to Undelete History in particular.