One of the perspectives he uses is a Recent Additions perspective.
He is also particularly fond of using geotagging, which I do not do myself. If you think it is in line with your own methods of work, do consider also listening to MacPower Users Episode 91 where he goes into detail about them there.
If you are not using perspectives in OmniFocus, you are, without question, missing out on one of its most powerful features.
PS I’m basically elbows deep into the next project, so it will still be some time before I make my next contribution to the OmniFocus/Productivity community at large.