YES!!! I loved it from the second I heard it several years ago. While everybody else went to buy a shirt and beer in between acts, I would always stick around and wait for him to do his mic check.
Buried somewhere I have a video and/or audio that I recorded of him doing that at the final Hollywood Bowl show. I remember it well because when he went to The Webb Sisters mic's he said "Hallie" and for a brief minute I thought "Did one of the girls get replaced?!?" He went back and corrected himself a few moments later.
I posted this in a different thread about the final show, but figured I'd post it here. I took this photo the last show. Looper is at Scott's position.