The end of the episode has Westphall pointing out that the town clock shows it's 11pm and it is getting late. At the time the episode was being made, St. Elsewhere was still in a 9pm slot (and it would have been a good inside joke). However, it was moved to the 10pm timeslot before this episode (and therefore ended at 11pm!)
Of the main cast, only William Daniels, Bonnie Bartlett and Cindy Pickett appear in this episode. A series low.
The episode is a pastiche of Thornton Wilder's play, Our Town, with Westphall talking to the camera/audience in the same way the Stage Manager does to the audience in that play. Like the play, the episode makes some nods to the fact that this is just a TV show being watched