bored me witless
HGG, in the audio version, is Dr Who meets Monty Python .. most of that spirit is lost in the film (check out the Tom Baker Dr Who story 'The Pirate Planet' written by Adams, and you'd see what I mean ..)
And BTW the 80s BBC tv version was real crap .. HGG as audio was script-driven and with sound effects, and in book form is a great 'ripping yarn'. I just think the visual element would always be redundant (unnecessary) with HGG.