The participants are Douglas Adams, Simon Brett (producer of the first programme), Simon Jones (Arthur Dent), Geoffrey McGivern (Ford Prefect), Paddy Kingsland (sound effects and audio mixing), Stephen Moore (Marvin), Geoffrey Perkins (producer of the first two radio series, except for the first programme) and Nick Webb (Pan Books).

They also tell the exciting story of how the last programme in the second series was so plagued by deadline problems that it almost didn't get broadcast, and the mind-boggling conditions they worked under to complete the job in time.

These comments are intermixed with some clips from the radio programmes, including some highlights such as the destruction of the earth and Marvin telling everyone how depressed he is.

Some of the topics discussed by Douglas Adams are: University of Cambridge and Footlights, Monty Python, Graham Chapman, Star Wars, Tolstoy's Resurrection, Last Chance to See, the Nordic god Thor, is Arthur Dent really Douglas Adams, Simon Jones, light switches, Richard Dawkins, atheism, Procol Harum, Doom Watch, X-Files, Sherlock Holmes, Arthur C. Clarke, The Digital Village, John Cleese's influence in selecting "42", the Hubble Constant, and his daughter Polly.

It is available as a bonus on the CD boxset of the first two series: Hitchhiker's Guide To The Galaxy: Collector's Edition ISBN 978-0-563-47702-0.