As good as the visual effects were in Avatar, the plot was a wreck. I was going to fill this out right after I saw it, but I give up, since it's been done in so many other places. It seems strange how the well-trodden path taken by the plot doesn't seem to hurt this movie. It doesn't help it a whole lot, either. I was most bothered by the frontal assault of the cavalry on the ground against the mecha. That was just dumb, something even a grunt marine should know was futile.