I watched it in 3D 2 times back in 2009 and I loved it, the visuals were grandiose. Last year I wanted to come back for another Pandora journey, but it felt dated. Some examples where I noticed bad cgi are the scene with the thanator attacking him or anytime there are multiple Na'vis on screen, they don't look as detailed. Overall, it isn't horrible, but it is not praiseworthy either.