did this a little while ago for an opera my dad was directing last year. He wanted some animation to start it out, you can watch the result below. I managed my time badly with it so it doesn't have as many inbetweens as it should do to make it look all swish, but considering it's the first "proper" lipsync I think I'd ever done I'm really happy with it. Mostly unique mouthshapes, an attempt at acting, etc etc.
also bear in mind that it was accompanied and interspersed with opera, and projected 10 foot high on a wall through quite a lot of dry ice.