Before having kids, I worked at the University of Wisconsin in Organizational Behavior. One hot topic at the time was Daniel Goleman's work on Emotional Intelligence (EQ). The theory was that most of one's EQ develops as a child. One way to enhance a child's EQ is to have them learn to recognize and label expressions. For instance, you can do this by paging through a magazine and asking the child to identify the expression on the faces you see.
Inspired by this concept (and bored in the car, waiting for Dan to get something before we could leave), I started asking Jude to act out various emotions. Here's what I got: