Update (2/2/11)
Xtranormal is no longer a free service. There is a fee associated with publishing/downloading all work. Perhaps in the future they will have accounts for education.
Xtranormal
A free online software that you and your students can use to create short films with your own scripts using text-to-speech technology. The user types the script into Xtranormal and produces a film with 3D characters. The free version allows for a maximum of two characters. You can see an example video from a student here.
