The Hitchhiker’s Guide to the Galaxy movie is bad. Really bad. You just won't believe how vastly, staggeringly, jaw-droppingly bad it is. I mean, you might think that The Phantom Menace was a hopelessly misguided attempt to reinvent a much-loved franchise by people who, though well-intentioned, completely failed to understand what made the original popular - but that's just peanuts to the Hitchhiker's movie. Listen.
And so on...
It’s bad on a big scale because enormous swathes of the story have been dispensed with - most of the Guide entries, whole scenes - or changed beyond all recognition. And it is bad on a small scale because many, many wonderful lines have been cut or in some cases actually rewritten to make them less funny. Whatever your favourite line from Hitchhiker’s, there’s a good chance that it won’t be in the film. Even if it’s really well-known, widely-quoted, much-loved, very funny - it will probably be absent from the movie. Or if it is there, it might have been changed.