Ugur Yetiskin has a series of solid videos on face stuff.
the whole looking in certain directions thing I don't think I buy, I think the first time it was an example of 1 subjects directions, and everyone took that up as the definitive, and I'm not sure it was proven anyway. Anyone know some real research. *added July 31 Check out wiki on neuro linguistic programming see where my hesitation on this comes from, so you can decide for yourself.
Kevin Koch still has best work up on blinks I've seen. Ugur's got some decent formula's here, but formula's without back ground information always seem dangerous to me.
eyelids, I think individuals have different neutral positions, which I'm getting from that Facial expressions book, but the stuff on the lower lid I agreed with, (lower lid can only get tightened up to close lid, going down only because bulge of cornea pushes it)
the mouth corner thing seemed solid, especially the arc part
head position seemed good too, wonder where he got the info.
* found on animation