I have spent the last week or so making improvements to each shot. I have included more overlapping and follow through for more fluid movement. I have worked further on the lip sync, and also included saccadic eye movement. I've also tweaked bits here and there, such as finger movements when Bill taps himself on the chest. I think there is a definite improvement, the whole animation is more fluid and less jerky. I've also re-rendered it in higher quality, 1080p HD (before it was 720p). Although it took over 12 hours to render, it was definitely worth it.
Here is the animation after the extra run of detail:
