(I posted about this site in June, but it had just been taken off-line. It appears to be functioning again, though)
Make An Animal Commercial with Ellen DeGeneres and the animal of your choice. You can tour Paris with Ellen and what I believe is a racoon, eat at a cafe with Ellen and a turtle, or make other bizarre scenes. In the commercial, the animal will say what you want using a text-to-voice feature.
It is as weird as it sounds. American Express sponsors it. Students love it, and can email the url of their completed commercial, which can then be posted on a teacher’s website for all to see.