This might be slightly OT, but I think it applies:
I actually had a strange dream last night in which I found a "lost episode" intended to be a fourth season pilot. It was a three episode arc and featured one of the Cheron aliens putting on a bunch of makeup so as to look human, and then masquerading as a Starfleet officer. He and Kirk were having a battle of wits about something in the conference room...and then I woke up. It took me a few minutes to realize that it was all a dream, and when I did I was quite disappointed. The episode was quite good, too.