1. It is competently made but all the concepts are derived from Japanese anime - so the reviewers saying its the best art ever made are wrong. Its the best thing they have seen. I refer them to Naruto (and especially Naruto Shipuden), which will truly blow their minds. After you have watched a few Japanese anime shows you can see that Avatar is just OK not the best thing since sliced bread. Its not new.

2. Regardless of the above comment I would like to rate Avatar 8/10 but I can only give 6/10 because the storyline (main plot) is a mess, some of the stories are just boring & contrived, and there is too much middle-class American teenager TV culture (which ruins the fantasy). E.g. episode The Beach. In many episodes you just know that the characters are going to do exactly the thing they know is going to get them into trouble. At one time there is a scary time limit to the 'end of the world' but at other times it is totally forgotten and lots of clowning around wasting time without a care in the world is happening. In addition, they really milk the tropes too far. E.g. Zuko is so foul, traitorous, and angry all the time compared to his poor treatment as a child, that trying to make him out as having an internal struggle is just a joke. Sokka is always sceptical of everything supernatural no matter that everyone uses superpowers to bend the elements or that they have met numerous spirits and hang around with a guy that can contact the spirit world. Gets bit annoying after 10 episodes. Etc.

3. Finally, the avatar learns how to fight using all sorts of bending but hardly ever uses anything but air bending, even in fights. He mastered fire bending but he won't use it to even light a cooking fire or a torch. And of course there are strange things like metal bending being a subset of earth bending, but it is used by the fire nation to build all of their machines because they are safe from earth benders. Everyone (earth & fire benders) uses metal cells to hold earth benders. The fire nation uses a huge fleet to attack everyone but some how the water benders never thought about sinking the ships by just filling them with water. The water benders can also bend ice. Apparently no-one has heard of unsinkable ships being sunk by icebergs either (Titanic anyone?). The air benders can only apparently fly with the help of kite wings. They can't create jets of air to help them fly. Earth benders can disappear into the ground and move about but they never use this ability to sneak around. Etc, etc, etc. These holes are endless.

Its a good show but the 10/10 reviews are just stupid (as usual).