Floyd
The PF excerpt is still on the broadcast version. It has only been removed from the CD version. The broadcast version is currently on BBC Sounds for the next 28 days. Note: may be only available in the UK.
My personal experience of Hitchhikers is of tuning in by accident to episode 4 ( the one with the stupid cops ), and being mightily pissed that I'd missed the first 3 episodes. Fortunately the Beeb realised they were on to a winner, and started a rerun immediately the series finished.
Ron.