I really loved Terminator 2. It was awesome. I was a teen when Leo stole my heart in Titanic. Aliens was an interesting combination of sci-fi and horror, and there have been countless imitators of that genre.
But that all does not change the fact that Avatar is not some great story. The real feat was what you did with the special effects. Your use of 3-D technology has changed the landscape of American Cinema forever.
FOR THE WORSE.
There are some (most?) movies that should not be 3-D. Step Up 3D, Clash of the Titans, Toy Story 3, Shrek, Smurfs, Yogi Bear, etc. Because of the fetish your experiment exposed, every crappy movie that comes to my small town is offered on 2 screens. One for 3D and one for 2D. This means that of the 18 available screens in my area, at most I will have 9 movies to choose from. Of those nine, at least 2 will be dedicated to the newest fart-misogyny fest with Adam Sandler or someone similar, and 2 will be dedicated to some crappy re-do of a movie from the 80s that no one was nostalgic for, but Hollywood made anyway because it's easier than trying something new.
And I know, I am bitching about you trying something new, and it's not you really. Just the "buzz" your new technology created, and the fact that everyone else wants to use it because "Hey, it worked for James Cameron! Let's get rich too!"
So please, next time you decide to revolutionize the industry, do it with something that won't be so gratuitously abused. Like original scripts and well rounded characters. Maybe you could even make a movie about a woman who isn't sexy and helpful, or a person of color who isn't a stereotype. We can all bet that the rest of Hollywood won't soon try to mimic that.