Movie, cinematics and the overall spectacle are great! The way you are immersed into the world you really feel like you are 'in the movie'. It is suppposedly he first 'real' 3D movie and even the background and not just the characters in the front are 3D. It really looks amazing.
Unfortunately the plot leaves a lot to be desired. Very 'by the script' and didn't try anything different. Much as the dialogue was very cheesy. The uneeded corporation bashing and anti-war stuff just wasn't needed but I expected that from Hollywood.
With all that said it is a must see for now. Since nothing really new was tried no one will be repeating lines in 40 years like "Luke I am your father" and the current super funny animated show won't make a spoof of Avatar