I do love backdoor pilots - there was a good one on Star Trek that never went anywhere. I can't remember if Fish had one on Barney Miller. MASH oddly never had one, unless you count the Ron Howard episode being a secret storyline where Ritchie C enlists, doesn't tell anyone, then sneaks back.

Aw! Thank you! We may have more than one listener, but you're the only one brave enough to admit it. I don't think Fish had a backdoor pilot on Barney Miller, but the two parter "Wojo's Girl" was supposed to be a backdoor pilot for a series that showed the detective's personal lives.