I believe the current incarnation of the Constantine movie betrays both the spirit and the storyline of the comic.
By pursuing a PG-13 rating I believe Warner Brothers is misleading people who will watch the movie, like it (since they're 13) and then find out that they aren't even legal to buy the real books. At the same time they're disenfranchising the loyal readers who expect to hear John curse and swear and just generally betray himself as the bastard he is. You know WB will decide to make their Keanu Reeves character the good guy, but one of the most fascinating parts of Hellblazer has always been the fact that John Constantine really is an anti-hero. He saves the day occasionally, but usually with a bodycount. He's a self-centered bastard who uses people and tends to get them hurt.
By making John American, I believe that Warner Brothers have made us (americans) look bad ONCE AGAIN (and it's not like we need any help) by essentially stating that we selfrightouse imbecils won't watch a movie unless it's about us (if I could, I'd point out to them the success of movies like "Lock Stock and Two Smoking Barrels," "Trainspotting," or for that matter "Snatch" (which WANTED to be British). I might also point out that as far as their hormone driven teenage girl market goes, girls like accents! Look at how much mileage James Marsters got out of a fake one.) They've damaged the spirit and the storyline by refusing to accept what an integral part John's nationality and his political beliefs have played in the comic. They've also killed some of the color, some of the life. Hellblazer loses some of its mystery (to those of us who still romanticise London) when it is transplanted into the very modern (in my opinion very un-magical) city of Los Angeles.
fuck it, I'm tired of being rational. I don't like it, they're screwing with something that I love and it makes me VERY ANGRY.