Great vid. A few comments on katz's techinique....if I may? He seems to avoid using the centrotec chuck in the vid. for screwin/unscrewing it would have allowed him a little more clearance. While pilot drilling followed by screwing for the piano hinge, I would have kept the hinge bit in the jacobs and screwed with the centrotec, just a fater way to switch bits IMO plus you can stand the chucks on end so your bits don't roll off the bench (they also fit well in an apron or belt slot). Also, he likes to keep his right angle chuck in line with the drill body I would have rocked it off to the side in some instances there to prevent the drill body from getting in the way of completing the drilling/screwing process. The right angle chuck on this guy is a great way to ensure your drill holes and screws are going in perfectly perpendicular to the object or screwing or drilling.
Other than that katz's is a god amongst mortals, I humbly bow before him