A critic could find flaws in this film. The characters and plot leave a little something to be desired. Having said that, who cares? Upon viewing the film with those 3D glasses on you are immersed into the world of Pandora as if you were in one of your own dreams. The spectacular, jaw-dropping visuals is enough to sustain even the pickiest of moviegoers for well over 2 hours (assuming you don't dump a jumbo cola down your throat in the first hour and half to take a bathroom break).
Missing this movie in the theaters would be equivalent to missing Star Wars when it originally came out in theaters -- it's that groundbreaking. And despite the flaws, it's still an entertaining yarn for all ages.