I have high quality DVD rips of the entire series plus rips of shorts from Short Attention Span Theater that preceded Dr. Katz, as well as the aforementioned live episode, with one of my favorite Maria Bamford performances (“I wish you were different!” “I am different!”)
H. Jon Benjamin will always live in my mind as Ben Katz.
Also Dr. Katz was ahead of its time in “kindness television.” We have stuff like Ted Lasso or Joe Pera now that is less snarky and mean, but in the 90’s only Dr. Katz was so full of love he let his adult son live with him indefinitely.