To me, Avatar is a high paced show that has it all: Romance, Comedy, Action, and Friendship. But what makes this show unique from the other of it's kind? The completely original world that the crew lives in and the foods and animals that live with them in that world.The different bending abilities being based on real-life martial arts was pure genius and must of taken months of study and learning.Also the humor in some of the lines is pure comedic genius. The brother-sister arguments are always funny and enjoyable even after seeing those same lines 6 or 7 times.
(Sokka to Katara)
"good technique little sister! keep it up! don't forget the breathe!
"Ok i am just sick and tired of you telling me what to do! You're like a chattering hog monkey!
"JUST END THE SLURRY WOMAN!"
This kind of humor makes the show fun and easy to watch and enjoy.