Audio-Enhanced+Avatars

Voki: a free online service that allows you to create personalized speaking avatars and use them on your wiki, blog, profile, and in email messages. Check out a video tutorial: media type="file" key="Create Your Own Voki Video Tutorial.wmv"

And here are instructions for creating one, as well as a listing of some potential classroom uses :

Blabberize : A fun way to give voice to an image. Blabberize works similar to a Voki but instead of creating an avatar, students find an image they want to use, highlight the mouth, and give it a voice by recording their own short piece. Once created, you can share these as widgets or links on your wiki, blog, profile and email messages.

Here's how to use Blabberize: