Principal Skinner mentions that this play will be performed at Springfield Elementary.
Mentioned by Cletus
Mentioned by one of the rednecks
The "Wiccapedia" Web page that Lisa looks at contains a reference to "Buffy the Vampire Slayer."
Lisa ice skates to Donovan's "Season of the Witch" at the end of the episode.
One of the protesters carries a sign that reads, "'Bewitched' was a terrible movie."
Creatures that look like Bambi and Thumper come out to skate on the ice and are then hit by the Simpsons' car.
Cletus introduces his "Country Bear Jamboree," which consists of wild bears chained up and growling.
Homer and Cletus' trip around the hooch locations directly references Sideways