I never heard of Avatar until I was searching for Avatars for a forum. I've watched the Matrix, the X-men series and I wished that I hadn't. These movies glorify the flesh. And by some of the responses you's are telling me that Avatar is running the same theme. I wouldn't say all movies glorify the flesh, but most do, it's difficult to find a "good" show to watch.
I wouldn't be too discouraged about your friend bible4life. A lot of the time people will defend something that they have attached themselves to. When truth is spoken it's never easily received at first. Give it some time to penetrate the heart and mind and if he is truly a believer your words will resonate in his ears. An example of this is the two men on the way to Emmaus when Jesus appeared to them and walked with them. They were his disciples, they heard Him preach, heal the sick, watched and they even performed miracles and because their hearts were hardened, they didn't recognize Him and the words that Jesus spoke to them were dull to their hearing. However, God at the end of the conversation opened their eyes and their understanding.
It is grievous when one doesn't quite "get it" and that is okay, God would have us feel that way as it shows that we love the brethren. But God was merciful to those men whom Jesus was speaking to. Because they didn't understand or hear the word readily, that doesn't mean that they have been cast off. If we took an inventory of our lives, we would see areas that we have shut God off of. That is why David said, "See if there be any wicked way in me". I say it this way, "I KNOW there are wicked ways in me". Not every one is born strong, and there are those who are the weakest among us and they are the most strongest. Weak as far as this world is concerned and strong in the wisdom of God. It's far better to deal with a sinner than a hypocrite.
I am firmly convinced that when the wave of God's Spirit flows over the land, those that we think of as carnal Christians will embrace God's covering readily. The hypocrite and those that think that carnal Christians don't deserve God's mercy and grace, will not. But even to the hypocrite God is merciful.