IGN says
It's safe to say that Green Lantern is a bit of a tonal mess. At first it was advertised like Warner's next Dark Knight, even though the narrative played a lot more like a moody, but kid friendly Star Wars-style fantasy adventure. But someone behind the lens (Warner, the producers, the director?) seemed to think the film needed a colossal dose of mindless action and trivial characters, almost akin to something like Transformers (though not quite as stupid). There's action everywhere here, even when characters are doing something as simple as walking through a doorway. There's a quick dramatic cue, some stylish camera moves, a character inexplicably runs, and James Newton Howard's overbearing score plays them out.
so is movie worth watchin or buying?