Avatar is about a time out of history, where only 4 nations xist- Fire, Earth, Water, and Air. They lived in harmony until the Fire Nation attacked to "share" their glorious achievements with thee world. The Avatar, the only one wo could master all elemnts,and could stop them, vanished. A hundred years later he is found by watertribe members Saaka and Kataara who join to aid him in defeating the Fire Nation and ending the war.

This is an amazing, increasingly popular, and dramatic show by Nickleodeon. So, why wouldn't you want to be able to watch it whenever you want? Some of the best quality sites that do offer it are:

www.animethat.com
www.freewebs.com/toonsurfer
www.avatarwatch.com