Um.

Okay.  I'll admit that it's been a long time since I read the book.  It  has a sad ending and I never cared for those.  And I know that trailers can be seriously misleading.  But l recently saw a trailer for the upcoming Bridge to Terabithia movie, and unless my memory is really faulty, it looks like they took the title and two plot points and wrote an entirely different story.  One that, I suspect, has very little of the impact or honesty of the original.  And one that seems to be trying to capitalize off the recent Narnia film. 

I hate it when they do that, screw with a book that badly.  It's a form of lying, and it's uncaring towards both the original work and its author(s).  About the only exception I can think of is Forrest Gump, because that took a book that was a complete waste of paper (never, ever read it) and turned it into a very good, moving, film.  But it was still dishonest.  

I'll give an exception to authors who rewrite their own stories for film, as long as they do so free of coercion.