The minorest of minor characters, but it's a good jumping off point for another character:

This driver brings Jacqueline Bouvier to the family home for Thanksgiving. We covered Jacqueline a long time ago, but it's worth noting that this is her first appearance in the current day, not in Marge's dream sequence, and in the elderly form that we're more familiar with. I'm not gonna include a screenshot. You know what she looks like.
I am gonna include a screenshot of the other, non-speaking security guard:

and a particularly dynamic shot of the hounds, who make their first appearance in the show:

The hounds were mentioned in "There's No Disgrace Like Home", but here we see then in all their terrifying glory for the first time. They are obviously mentioned a lot more, with "release the hounds" becoming a secondary catchphrase for Mr Burns, and are considered an important enough part of Burns identity that one of the default abilities Burns has in Tapped Out is to walk them.

This post is part of my "Every Simpsons Character Ever" series. For a list of my rules in this project, click here.