Just start a list of the differences between the book and the movie and see for yourself.
1. Ford became black.
2. Zaphod has ONE BLOODY HEAD.
3. Trillian NEVER LOVED ARTHUR.
4. The vorgon ships were yellow.
5. HHGG never was intended to have plenty of space battles
...
I feel like I just saw the corpse of poor Douglas Adams ripped before my own eyes and could do nothing about it.
Edit: Yes, thank you, Seth. I corrected the link. You probably see how upset I am: I couldn't even get a url command right!
You should drink a cup of green tea and relax. Maybe then you would change your mind about this movie. About your criticized points:
1. And? Is that a problem?
2. Actually - as it was already mentioned - he has two heads, one being hid. You should watch the trailer a bit more carefully.
3. Who said she does in the movie? I couldn't get such an info from the trailer.
4. The Vogon (and not Vorgon <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />) ships' color has really been changed - I do think that yellow space ships would look funnier indeed, but oh well, if that is all they change, I am fine.
5. Again: I couldn't get such an info from the trailer. How can you conclude from a few minutes of a trailer that the movie will have plenty of space battles? Not to mention the fact that the novels are quite full of action, too.
Generally, I can't agree with such a rather shallow criticism. However, I am not really pleased with the movie either - mainly because of the actors. I wanted Jim Carrey! <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />