If you've been spending any time on Twitter lately, you've noticed the new manga-themed avatars that have been spreading around.
Basically, go to faceyourmanga.com and recreate your face, using a bunch of cutesy facial options (button noses, huge eyes, freckles).
Then you download the finished product and use it around the web as your new avatar for the next few weeks - until the meme has been supplanted by something else. Because I love memes of all shapes & sizes, here is the avatar I created. Very accurate!