Voki is a fun way to have an avatar introduction you to your class. I have asked my students to do this, but rarely have done it myself. I am going to do that this year. Should be fun. Here is the intro that I did for an INTEL course that I am taking called "Facilitating and Implementing Online Professional Development." Should be fun.
What do you use for introductions? Can you suggest Avatars that you can make talk? I tried Xtranormal but it didn't work correctly.