Yeah, the sobriety test scene is funny, another example of two really fine, comic actors doing their thing. But the clowning stuff is by NO MEANS the highlight of this excellent episode...not for me, anyway.
What stands out is the total sincerity and sensitivity of Hal Smith's portrayal of the "real" Otis; with good material and direction, Smith was a fine actor. Too bad the series rarely gave him a chance to show off his "legit" acting chops.
The scenes between Hal and Dorothy Neumann (Mrs. Campbell) are very touching, as is Hal's brief speech near the end (I wish it were longer).
If you want comedy, there's plenty of it with Dick Elliot's wheez-bag, blustery, teddy-bear performance as Mayor Pike; the scene just outside his office door (when he learns that Otis is about to show up for the ceremony), with his frustration boiling over at Andy and Barney...brief as it is.... is an example of light comedy at its finest, written, timed, and delivered to perfection; three true pros doing their best work, effortlessly.
Alas, many AG fans seem to be more interested in the slapstick-y aspects of these shows, and generally overlook the depth which a bufoonish character like Otis was occasionally allowed to display. LR.