When Dwight crawls through the prison sewage pipe, he sees a "Pure Mountain Spring Water" pipe next to it, and screams "Dammit!", this is a parody of "Shawshank Redemption", where the main character in that film gains freedom from prison by crawling through a dirty sewage and waste pipe.
The song that featured during the sequence where Marge is being stalked by Dwight Diddlehopper is "Who Can It Be Now?" by Men at Work.
When Marge and Dwight are at the amusement park, you can see the ride "Dilbert's Flying Cubicle" in the background, a reference to Scott Adams's popular comic Dilbert. The theme song of the Dilbert animated series can be heard in the background for a large portion of the scene.
The ads in the school newspaper are the same text and font used by Coffee News, a small newsletter.
In the part where Bart and Lisa are watching Itchy and Scratchy, Scratchy appears to be wearing a Star Wars rebel pilot helmet when he is piloting the jet.
Curiously, even though Naegle is included on the list, she is one of Dwight's hostages, therefore making Booberella the only woman Homer can marry. Unless, Dwight wasn't intending to kill all the hostages.
This is the third episode (second involving Marge) where a Simpson meets an aggressive prisoner who turns out to be in need of a family member. The previous two were Season 15's "The Wandering Juvie" and Season 12's "Pokey Mom" (the first to involve Marge).