You know, I was really disappointed with Avatar as a sci-fi work. Woulda probably been a lot more interesting (and realistic) if the Nav'ai weren't already pretty much human to begin with. I mean, I get how it's hard to relate to characters that you don't think you could have a go at in the sack, but come ON. Sci-fi isn't just social commentary, it's "what if" scenarios that make us question. Would everyone have been so "it's wrong to kill all the blue people" if they had been hideous freaks with translucent carapaces and like, I dunno, more legs in all the wrong places? It's not hard to identify with blue tiger-people. I mean, you kinda HAVE to cause they're so obviously people. I mean, make it hard to accept! Make them scary as hell so when the protagonist finally joins them it means something! (hey, I just realized, sorta like District 9, eh?)
Also think they coulda done a lot more with the avatar concept (like having him disconnect from the machine but still have the Nav'ai version of him active and they end up fighting on opposite sides or something weird like that) but whatever.
Aaaanyway, for the next one I suggest Alien vs Predator vs Avatar vs Prawn: Bipedal Deathmatch!