The Much-Heralded Helmet of Sir Gawain:
-The part before the temple games, where Kirk says "Exit, stage right!" and everyone does the silly pose.
-Kirk: "My mom used to make me set the table just like this."

I can't remember which episode it was (probably season 1), but I also remember Kirk slipping on the floor while trying to help a contestant to her feet. It was after one of the soapy floor games.