Thanks to Minty for pointing me towards the trailer for the new HHG movie over on Amazon. Just too cool! Like BW Ventril, I was immediately struck by how Magrathea appears to have been filmed in the exact same location as the BBC series. I pulled my paperback off the shelf and read a few pages earlier. Noticed that I almost didn't have to read it, that whole passages just spooled off in my mind. Partly from having read it many times. More from having seen the BBC series even more times. Mostly from having listened to the album version of the radio series many many many times. And, yes, the 2LP version of HHG is probably the vinyl I still kick myself for having sold (back in those dark days when I sold off most of my vinyl).
Here's a nice Douglas Adams tribute site