The first reviews of the movie script are coming out. Yes, it is a script and things may change, but it is looking bad. As well as unforgivable cultural slips (what exactly is "eggy in a basket"?), the movie has simply removed the anarchism of the central character. The script starts with the death of Guy Fawkes. In the graphic novel, V dresses up as Guy Fawkes but that is it. No attempt is made to put Fawkes at the centre of the novel, rather V's anarchism is. In the script, it becomes central.
To fit this in, it simply drops anarchism. The classic "Anarchy verses Justice" conversation which starts the book has been eliminated, as does the V sign (far too close to the circled A). V's TV address is no longer as God urging his creations to take responsibility for their own lives but rather to explain the Guy Fawkes motif. Nowhere is the idea of anarchy being a force for good suggested. And as for psychedelic drugs freeing the detective's mind to successfully hunt down V? Not a possibility.
As for the well reported "everyone-dressed-as-V" storming the Houses of Parliament at the end of the film, this is extremely silly (and not in the book). Where did all the costumes and masks come from? Is there a factory in fascist Britain mass producing them? Has V got one somewhere beneath London? Did the masses seize the factories and spontaneously mass produce them? All very unlikely and, yet again, misses the point of the book.
And so the key, the central theme, of "V for Vendetta" has been removed and instead we get Guy Fawkes. Ironically, the mask has replaced the body. Unsurprisingly, Alan Moore has (once again!) requested his name be removed from the film. I can see why. So while it may be a good film and incorporate elements from the books, it looks like it is far from Moore's intention and while it may share the same name it is not the same story.
So buy the graphic novel now before it gets "Now a major Motion Picture" plastered across it. At least that way you can get a firm idea of how much they have gutted the novel when it does appear in the cinemas.