Jonah Lehrer enjoyed Avatar:

At its core, movies are about dissolution: we forget about ourselves and become one with the giant projected characters on the screen. In other words, they become our temporary avatars, so that we're inseparable from their story. (This is one of the reasons why the Avatar plot is so effective: it's really a metaphor for the act of movie-watching.*) And for a mind that's so relentlessly self-aware, I'd argue that 100 minutes of self-forgetting (as indicated by a quieting of the prefrontal cortex) is a pretty nice cognitive vacation. And Avatar, through a variety of technical mechanisms - from the astonishing special effects to the straightforward story to the use of 3-D imagery - manages to induce those "synchronized spatiotemporal patterns" to an unprecedented degree. That is what the movies are all about, and that is what Avatar delivers.