Anime Seed - AvatarOffers an extensive list of Anime series to watch including titles like Avatar.
AnimeFreak- AvatarOffers both subtitled Avatar Airbender videos in English, Spanish, and Turkish.
Kumby- AvatarHas a few pop-ups, but beyond that carries a good list of Avatar episodes to watch.
DBZ-Zone- AvatarAll inclusive anime site with tons of Avatar episodes to stream and watch.
Anime Ultima - AvatarEnjoy your favorite Avatar episodes on this streaming anime site.