I watched some more Lie to Me yesterday, which spawned another round of internet searching for expressions and emotions. I watched ... well, a lot, and read quite a bit, too. The three vids below were helpful to me, because they were so basic.
Gestures and Body Language Tutorial
http://www.youtube.com/watch?v=ZUXtGQkJcQ0This is very, very basic. Like the one below, it links body language with feelings/emotions/intentions in a simple, one-to-one manner.
Body Language: The Meanings of Hand Gestures
http://www.youtube.com/watch?v=PYcID4KWKe4This one was really good. It was straightforward in linking emotions with gestures and body language. Of course a gesture can mean a lot of things in context, but this gave the simplest, most basic 'X means Y' that I've seen, which is a good place to start from.
Lie to Me: Reading Emotions and Deceit through Facial Expressions
http://www.youtube.com/watch?v=RnwdndsspTIThis doesn't live up to the title, but it includes many good, small learnings, reinforcing things I've learned elsewhere about blood flow and sweat during lies, lie detection techniques, microexpressions and eyeline direction.