What is
"Head Muppeting" in animation? It's a term I first heard used by veteran animator Sydney Padua when she was teaching an animation class at Escape Studios.
"
Head Muppeting" is a similar concept to that of "hitting the accents", developed by Richard Williams in his book
The Animator's Survival Kit (we have many copies in the
11th Floor Animation Library).
Head Muppeting means that, when you are animating a dialogue shot, you need to keep the character's head in motion, to make the audience believe that the character is saying the lines.