Read the book AND seen the film?

It is upon the whole very faithful to the book, but of course, there are some deviations. For instance, in the book, Mrs Weston had recently become pregnant by the time of the Box Hill picnic, and was absent from it. Emma WAS received by Miss Bates when she called at her home soon after the picnic, even though Emma had been rude, which serves to highlight Miss Bates's good nature.
Emma's first encounter with Frank Churchill was not whilst her carriage was stuck in that small flood - that was entirely created for the film. Harriet was with a Miss Bickerton (an incidental charactor who otherwise makes no appearance in the novel again) when she was assailed by the gypsies, and not with Emma.

These are the more significant changes. There are probably others which I can't think of at the moment.

Emma's speech to Harriet about marriage is almost exactly as in the book.

From chapter 10

After a mutual silence of some minutes, Harriet thus began again --

"I do so wonder, Miss Woodhouse, that you should not be married, or going to be married! so charming as you are!"

Emma laughed, and replied,

"My being charming, Harriet, is not quite enough to induce me to marry; I must find other people charming -- one other person at least. And I am not only, not going to be married, at present, but have very little intention of ever marrying at all."

"Ah! so you say; but I cannot believe it."

"I must see somebody very superior to any one I have seen yet, to be tempted; Mr. Elton, you know, (recollecting herself,) is out of the question: and I do not wish to see any such person. I would rather not be tempted. I cannot really change for the better. If I were to marry, I must expect to repent it."

"Dear me! it is so odd to hear a woman talk so!"

"I have none of the usual inducements of women to marry. Were I to fall in love, indeed, it would be a different thing! but I never have been in love; it is not my way, or my nature; and I do not think I ever shall. And, without love, I am sure I should be a fool to change such a situation as mine. Fortune I do not want; employment I do not want; consequence I do not want: I believe few married women are half as much mistress of their husband's house, as I am of Hartfield; and never, never could I expect to be so truly beloved and important; so always first and always right in any man's eyes as I am in my father's."

The people have appointed me. I am their leader. I must follow them.

That speech is defeinitely heard (almost verbatum) in the Beckinsale version, but for some reson, I just don't recall hearing it in the Paltrow film.

Yes, I found the book quite similar to the film. Many of the lines from the movie appear verbatim in the book.

I haven't read the book, but I have seen all the three versions (this one, itv and BBC 1972). I find the character of Jane Fairfax to be quite different in the BBC version, does anyone know which one is more correct? In this movie she didn't seem nice at all, but in the other we feel sorry for her at the end.