When I first came out of the theater, this movie left me in awe. But now that I think about it, this movie wasn't all that great.

I like to save best for last, so let's start with the bad. Sam Worthington's performance was iffy at best. He always sounded bored and like he wanted to be somewhere else. There were also some other bad acting.

The script was mediocre at best. It had loads of cheesy lines, bad character development, and no emotion. If the bad guys won I wouldn't care at all! The antagonist almost seemed to evil! His lines and actions are way to insane, crazy, evil, and determined. There were certain moments that didn't make sense at all, and everyone seemed to always be making stupid decisions. The message of that we should conserve our environment was good, though should have been much more subtle and I don't think it showed the correct reason why to protect it, it just said "we should protect it". The entire thing seemed a bit like a rip-off of Pocahontas and Titanic, too.

Yeah, the effects were amazing. This was the best thing about the movie though. They also distracted from the already bad story. There is only 1 real action sequence, the climax, so action junkies will easily get bored.

All in all, this movie isn't worth watching. Doesn't deserve highest gross of all time, and I'm glad it didn't win Best Picture.