BAD!!!! no big spoilers...

Rating: 5/10 (11 March 2010)

I went to see this movie expecting to watch maybe the greatest sci-fi movie made, but I will, never again in my life, expect that a movie will be great only because its visual effects.
People are saying that even with a mediocre script and so full of clichés (sometimes I figured out the next lines, it's just depressing), it's a visual wonder and a revolution to cinema, if this is the revolution, I don't want to watch new movies anymore. From 1900 to 1950 they made some of the best movies ever made, and their special effects (When they had it) were laughable.
I hated almost every character of it. There is the bad Colonel, the greedy "businessman", the doctor that want to protect the animals and their cultures, Come on, what is this? a fairy tale?. They spent 250 million dollars making a movie (A bad one), and in the end they say, "Protect the green!", "In my world there is no green! Man destroyed it!", don't you think that is kind of controversial?. Giant blue people attack everybody they see in their way, and you want to protect them?
Now let's talk about the special effects, of course they are great, but I think it is stupid to make this very tall blue people without never making them interact with a human, or put a human in their environment. There was a moment in the movie that I actually laughed, the fight between Jake's avatar and Quaritch's giant robot, I mean, It's a giant robot full of gun's and all that stuff, and It carries a giant knife... hahahahahaha, that is so Looney Tunes.
Verdict: Again, Visual effects only, don't make a good movie.