Well, this was all new to me! I joined the Forum after that previous discussion of the dancing shadows and have not had enough time to read all the those older communications on this Forum, unfortunately. I had also never noticed the shadows myself watching the episode (I lose attention when Kelly is off screen....). I find this to be absolutely HILARIOUS. As soon as they were off camera, Culp and the actress just went wild, for fun, silently and no doubt knowing their shadows were visible on the further wall. What makes it even more hilarious is that the next second we see Kelly and his date dancing slowly and seriously, as if nothing happened. LOL!