Not to sounds offensive to the opening poster or anyone else who is a fan of Eastern Animation, but I think Anime and Manga aptly fits the correct style, even if it isn't strictly considered an Anime. Personally, I'm of the opinion that anything made in the anime style, with the same themes and general colour scheme, then it's an anime. Avatar: The Last Airbender
may technically be a Western Animation work, but I personally consider it an anime, even if it's a western-made one.
As the others have said, though, if there are enough threads generated about it, there's no reason it couldn't be split off into its own subgroup.