One of my favorite things about this movie is how real the facial expressions of the Na'vi look. Here are some of the best (I'm limited to posting 4 pictures as larges ones only, click the small ones to enlarge them).
Neytiri's face when she sees Jake lost in the woods... It's like she's pondering "Where should I shoot him? In the head so that he dies quickly and painlessly? Or in the foot, and let the neurotoxin slowly make his heart stop?"
Same thing when she's ready to shoot:
avatar 3.jpg
When she sees the gunships in the sky (at least I think this face comes from that scene):
avatar 7.jpg
And also the series of angry faces she makes at Jake when they first meet, saying he's a child, a baby, etc:
http://images3.wikia.nocookie.net/ja...Trailer-49.jpg
Thanks to ElBartoME for finding the above picture.
It saddens me that she doesn't make nearly as cool faces later in the movie.
Jake's face when he sees that huge feline creature. In this scene, his ears, wich were up, retract, like a cat does when it's about to be scolded by the owner... this was an awesome touch!
His face of awe:
His "I'm totally loving this new body" smirk:
avatar 5.jpg
The "hiss" face when challeging the Ikram:
avatar 6.jpg
And his "Please die, stupid ball of fur!" face:
I apologize for the quality of the pictures, I took them from youtube vids =P
If you find more cool faces, please post!