I encourage anyone who has sent thousands of USD/BTC to this man to take a look at Dr. Paul Eckman's work in microexpressions and deception. I was his protégé for several years in a West Coast research facility (this was before the whole Lie to Me series that he inspired), so I have a fair bit of knowledge in this arena.
Let me put it this way: if I was still teaching, I would use this video as a textbook example of extreme masked contempt and happiness. The contempt is obvious, of course, but an interesting point about these emotions - when shown together and masked - is that they are highly correlated with deep-seated deception and feelings of "smugness".
This is just an observation, and the thing about microexpression reading is that it is prone to error in both interpretation and recognition if not performed by a train professional (and the interpretation is always prone to error). I just think it's worthy to note.
Now go read this thread for some more fun insights (not specific to BFL, just in general):
https://bitcointalk.org/index.php?topic=156501.0
