Just a few days ago I was on flickr and noticed some cool avatars and I got a little bored with my display picture for my messenger so I went looking for one online and I came across Face Your Manga. I've always admired manga and this was an opportunity to do just that so indulged.
Face Your Manga allow users to select the features of their avatar - hair, eyes, complexion, background, you name it you can change it. Users get to express themselves in an artistic and fun way, plus if they like the art enough they can order prints or larger versions which they can use as desktop wallpapers or whatever they desire.
Here is my avatar...