One of the saddest episodes of Dinosaurs was the one that was based on "Driving Miss Daisy", where Earl drives Ethyl to her class reunion while secretly the rest of the Sinclair family are taking a family portrait for Earl's birthday. The entire ride to the class Ethyl bothers Earl.
But then, when Ethyl gets to the class reunion, she finds out that she is the only living member of her class. The host starts reading off class superlatives, and Ethyl wins every one. Ethyl is crushed, and Earl comforts her.
When Earl gets back home, the family is still taking the family portrait, so Earl stops them, saying that someone from his family is missing from the picture. (I believe that one of the kids then asks "The Television?" or "The refridgerator?" or something like that

) Then Earl insists that Ethyl be in the picture.
It was such a moving episode! One of the episodes that has really had an impact on me.
I love Ethyl, she is such a great character, in both her serious roles (as in the episode mentioned above) and when she is being funny!