(outlink) On body language

Do you, too, try to find as many cues of body language as you can, and join them into your understanding of people?

The Nonverbal Dictionary of Gestures, Signs and Body Language Cues from the Center for nonverbal Studies might be of help.

For more specific information, some kind people have collected specific information on facial expressions, there's some good research and link collections, and somebody has put together a forum specifically for the topic (down when I tested it, unfortunately.) There's even some movies available.