One fan did what I consider a brilliant job on this. Writing jokes in the style of Douglas Adams is no easy feat but in my opinion, he nailed it. Also, it retains the visual charm of the BBC tv version along with a shockingly good Peter Jones impression as the Book:

Douglas Adams and Doctor Who have a long history together. Adams was a script editor for a year of the Tom Baker series and wrote three stories – The Pirate Planet, City of Death, and Shada (which was canceled due to a worker’s strike). In series three of the new Doctor Who show, there was even an episode titled ’42′ which writer Chris Chibnall said was a reference to the Hitchhiker’s series in which 42 is a key plot point.