Avatar truly is a spectacle. You have to at least see it once to fully appreciate the 3d spectacle that it is. After that, Avatar is a terrible movie; a 2+ hour tech demo filled with cliche characters, a bare bones plot, and pretty much everything you've seen in Cameron's other action epics Terminator and Aliens only this time redone in awesome cg. If you want to see what technology can do for cinema, then check out Avatar. If you want to see a good movie, go see something else.