I'm currently putting together a few supplements to the Batman "Network Masters" set, which I'll be sharing here when I'm finished. So far, I got the following:

Alternate audio for "Hi Diddle Riddle" (with William Dozier narration)

Alternate audio for "Smack in the Middle" (without William Dozier narration for the Part 1 recap; music-only recap)

Missing dialogue from "The Penguin's A Jinx" (During the scene with The Penguin and his goons listening in on Batman and Robin, The Penguin says "I know Batman's fertile mind. He'll come up with another.")

The audio is synced to the "Network Masters", and I'm burning it on a dual layer DVD, so I won't have to reduce the quality of the episodes.