My favorite joke of his: https://www.youtube.com/watch?v=jJN9mBRX3uo
podiatrist, going to be something about feet... psychiatrist vs podiatrist, some kind of pun incoming...
...then you both want to strangle him and fall on the floor laughing simultaneously.
Unfortunately his comedy is held up by way too many people as a gatekeeper to "true appreciation of comedy" which is ridiculous. That always seemed part of the self-destructive aspect of top comedy, which almost always is a public face of deep depression.
Norm was a tragic figure, much like many of the comedic greats.
[edit: yep it is :) - a virtual hug to you friend ]
You might appreciate the backstory: