Press Record.

http://saymail.sympatico.ca
Possibly the creepiest free ecard service to pop up, SayMail allows you to upload Jpegs and map movement points to faces. Type in your message, and their text-to-speech engine spits out a small Java based output. Clips are complete with eye blinks and nods.
Check out my example based on my friend Matt, who notoriously despised our wine swilling hippy neighbors, yet just purchased himself a guitar. Rock on Matty. http://snipurl.com/matty