I'm actually in the minority here, apparently, but I'm just getting a bad vibe about Avatar and not excited about it in the least, and I'm a sci-fi nut.
*LOVED* District 9, btw, and I actually really love most of James Cameron's work, but I haven't liked most of the visuals I've seen from Avatar so far (way too CGI-ey for my tastes), and more than that, I just have this terrible feeling the story's not going to be there in the end (which is the most important part of any sci-fi for me).
I even listened to the new "I See You" Leona Lewis song specifically for the movie and it just has me feeling they're trying to copy the Titanic song as closely as possible without actually using the same song (and I liked Titanic - don't get me wrong, but the similiar "sound" is just too eery for me).
We shall see - I'd love to be wrong and like this movie, but my instincts keep telling me to run.