Pre-made Avatars:
Super-Hero Themed Library Avtars

Make an Avatar:
An Avatar is a virtual representation of yourself.

Lego Movie Avatar
http://sigfigcreator.thelegomovie.com/

Manga Avatar Maker:
http://www.manga.com/content/avatar-face-maker

Scott Pilgrim Avatar Maker:
http://www.scottpilgrimthemovie.com/avatarCreator/

DoppelMe:
http://www.doppelme.com/

Simpsons Avatar:
http://www.simpsonsmovie.com/main.html

More Avatars collected by Marie Slim
http://www.diigo.com/user/mariaceleste/avatar

Avatar_Generators
http://thedaringlibrarian.wikispaces.com/Avatar_Generators