I was on iTunes. On the homepage (if you haven't yet upgraded your iTunes), there's "iTune's Ten Best Animated Shows."
The order goes as follows:
1.Simpsons
2.South Park
3.Spongebob
4.Family Guy
5.Peanuts
6.Looney Tunes
7.Aqua Teen Hunger Force
8.AVATAR THE LAST AIRBENDER
9.Wallace and Gromit
10.Naruto
I honestly feel that this is amazing. Out of hundreds of animated shows, including hundreds of animes like Inuyasha and Fruits Baskets - really popular cartoons - Avatar came in 8th, behind either the most popular TV shows of this century or classics like Peanuts. Heck, Avatar came before NARUTO. I'm assuming that everyone in the English speaking world knows what Naruto is (even if they can't say it. I'm talking to you, mom). In addition, Avatar is generally viewed as a children's show (although we all know that it's too awesome to be a kid show), and to have it even considered by iTunes representatives is just awesome.