I think what bugs me is that it seems that during little slight pauses between words, you have the mouth shape go back to a neutral pose. Is that right? It just seems that there is an awful lot of movement in parts where there shouldn't be. Maybe if you hold the mouth open and have it slowly go to the next phoneme pose instead of it quickly going back to the neutral pose and quickly to the next mouth shape real fast. I don't know if that is the problem that I am seeing, but it sure was a problem that I had when first doing lip-syncing...too much cnappy movements that weren't necessary. Anyways, maybe there is another way to fix it, but I think it is obvious that there are points in there where the mouth moves too much and isn't as fluid as it could be. Just my 2 cents. Looking good though, like the overall body movement.
--Jonathan