Damn, the eye rigging is really great!
A very minor thing, but you can hold shift at 2:45 to create a bone without selecting it. This lets you create another bone under the same parent as the last bone, without needing to select the parent each time. Holding alt is also great, to redraw the selected bone.
The showing how to use the weight brush was good, even if it wasn't your main goal. Also I think people will benefit from how you show setting weights, deforming, then adjusting the weights to fix up the deform.
9:20, it's always better to avoid clipping if you can, as it has a relatively high CPU cost. Another way to do it is to pole holes in the guy's face skin, then put the eyes behind the face.
I was going to say that the pupil seems to have a lot more vertices than necessary, but then you explained the effect where the iris moves a bit farther. Very nice! Looking forward to more videos! 8)
