The visual effects were amazing to say the least. And I'm confused by the reviews that said there is no storyline...it's ALL story line. A very clear environmental message...shoved down your throat a bit...but a good one. I was actually surprised at how little action there was...but the action scenes at the end were well worth the wait.
I do think the main military villain played his part WAY over the top and he's the only thing we didn't like about the movie. James Cameron said every single thing came from his imagination alone, and when you really look at all the amazing little details that's one active imagination!!!! We would see this movie again for sure.