Throughout the first couple of seasons, there were several times that Keith would mention he had something for Veronica and she would exclaim "Is it a pony?!" Now she has a dog named Pony.
Cho's Pizza makes an appearance, its first since season 1 episode "Kanes and Abel's" from the show's original run.
The frat teen at the bar is seen wearing the same striped blue shirt worn individually by Duncan Kane, Logan Echolls, and Stosh Piznarski at least once each throughout the show's original run.
At the town meeting, Veronica asks her father, "How the hell did we let a crooked real estate tycoon come in here and seduce us into longing for a bygone era?" To which Keith responds, "An era that never existed." This is likely a veiled reference to the 2016 presidential elections.