The "overrated fiction" Lisa identifies to prove she isn't a robot is: Gone With the Wind, Tender is the Night, On the Road, Daisy Miller and Of Time and the River.
Bart is taunting Moe with a Star Trek original series phaser.
Near the beginning, a Fred Flintstone-like character is toting Dino on his spear.
Ruth Powers complains that Marge hasn't been to see her in 25 years. It's been 19 since she last had a speaking role and 28 since we last saw Marge visit her. There was a time during that interval when she moved away from Evergreen Terrace.
The title refers to the previous episodes The Way We Was and The Way We Were.