Well here's an idea (only an idea though, not a solution). What about just animating the skins? You would only need two skins with the mouth open and closed. I'm thinking of this because I remember riding through Disney's haunted house (California). They had a trio of singing heads on statues that featured a blank where the mouths were and a movie was projected on that part of lips singing. I'm not sure the mouth on a human opens far enough to make it worth animating as a low polygon feature (monsters are different though).

Just an idea-

[This message has been edited by mbee (edited 22 May 2001).]