Here Jessie mentions he gets a toothache whenever he hears the Bonanza theme, but in "Driving Miss D.J.," both Jesse and Rebecca were singing the song to Nicky and Alex in the opening scene after the credits and Jesse is fine.
DJ does not appear in this episode.
This is the third time Greg Collins appears as a tough guy.
This was an environmental awareness episode, hence the recycling, Michelle's ecological project, and taking the subway.