Trivia: The horse heart that Daenerys eats was actually made of gelatin, and genuinely tasted dreadful - her physical revulsion at eating it is real. It had dyed pasta to simulate veins, and was injected with fake sugary blood, which attracted flies. The blood was so sticky and ended up covering Emilia Clarke to such an extent that after filming it glued her to the toilet seat.
Trivia: Velma's famous line, "My glasses; I can't see without them!" was coined from her voice actress Nicole Jaffe when she lost her glasses during a recording session and then uttered of what became to be famous catchphrase of the bespectacled character. The writers liked the phrase so much that they decided to put the iconic scenes of Velma losing her glasses during the show.
Trivia: A lot of scenes in the Christmas Special had to be rewritten days before filming started due to the sudden passing away of Geoffrey Hutchings, who was scripted for a main role in the episode.
Trivia: Due to the rigorous stunts he performed, actor Robert Conrad would often rip out the seat of his already too tight pants.
Trivia: David Hasselhoff, who plays Michael Knight on Knight Rider, was married to Catherine Hickland from 1984-89 and in 1992 Catherine married an actor whose real name is Michael E. Knight.
Trivia: Actor Vic Morrow used a non-firing wooden replica of a Tompson submachine gun due to its lighter weight, thus being easier to carry. He used a heavier blank-firing model when it was required to be fired.
Trivia: The portrait of Geronimo hanging in the bar was a tribute to Nicholas Colasanto after he died. The portrait originally hung in his dressing room.
Trivia: As part of the "Nick spot it" game, various things in this episode are upside down. When Max is ready to tell the family that he isn't the vandal, the grill is upside-down. Also, when Barb asks if the family if they wanted egg kabob their family picture is upside-down. When Max is grounded in his room, his Dark Mayhem poster is upside-down. When the Thunder Monitor says that the angry mob is approaching it's upside-down also when the angry mob is inside the house the penguin butler statue can be seen upside down This happens a few more times throughout the episode. When Max and Phoebe are sleeping at the park under the Hiddenville park sign, it is upside down too. When the family was picking up eggs, Max and Phoebe were upside down. When Max snuck out the first time, Coloso was also upside down.
Trivia: All of the women who starred in the show, with the exception of Betty White, died one year apart from each other. Estelle Getty in 2008, Bea Arthur in 2009, and Rue McClanahan in 2010. Betty White was the oldest of them all and died in 2021, at age 99.
Trivia: Karl Urban, who plays Cupid in this episode, also plays Caesar in many episodes.
Trivia: Edward James Olmos (Commander Adama) plays a man involved in a search for dangerous androids who are nearly impossible to distinguish from humans. He played a man in a very similar situation in Blade Runner as Gaff. Amusing coincidence.
Trivia: Even though he plays Reese's younger brother, Frankie Muniz is actually about three months older than Justin Berfield.
Trivia: The show was filmed in an actual prison (now unused) in Joliet. The death row cell used for Lincoln Burrows is the actual death row cell that held serial killer John Wayne Gacy.
Trivia: In the opening credits there is a shot of a girl standing alone on the corner of a street. This was taken from the Buffy episode "Anne", when Buffy was staying in Los Angeles.
A Long Walk To Pittsburgh (2) - S4-E17
Trivia: Topanga is talking to Cory and she says, "My Aunt Prudence wouldn't even know who Romeo and Juliet are!" When her Aunt Prudence knocks on the door, she is played by actress Olivia Hussey, who played Juliet, in the 1968 film Romeo and Juliet, also starring Leonard Whiting as Romeo.
Trivia: Castle's Halloween costume is of Malcolm Reynolds, played by Nathan Fillion in the short-lived TV show "Firefly." Alexis asks him: "Didn't you wear that like five years ago?" Serenity, the film based on Firefly, was released 5 years before this episode aired.