Trivia Facts | Top Quotes | Goofs/Mistakes
  • Roddy McDowall, the voice of the Mad Hatter, also appeared in the '60s _"Batman" (1966/II)_ series as the Bookworm.
  • The New Batman Adventures episodes were part of The New Batman Superman Adventure programming block and are more commonly referred to as the Batman Gotham Knights episodes.
  • This is the first time that Nightwing and the Tim Drake version of Robin are used in an animated series.
  • According to Paul Dini and Chip Kidd's book "Batman: Animated," "The New Batman Adventures" begins approximately three years after the end of Fox's "Batman: The Animated Series."
  • The three late-night revelers singing "Auld Lang Syne" in the tavern are caricatures of Bruce W. Timm, Glen Murakami, and Shane Glines.
  • The football game that Joker's message interrupts features a commentator naming one of the players as "Altieri", a reference to Kevin Altieri.
  • The episode begins and ends in the same place, Joe's Tavern, which is opposite the Gotham Hotel where Harley and Ivy were staying.
  • For Tim Drake in this series, the writers characterized Tim as such to blend him with another character, Jason Todd - the ill-fated Robin who would otherwise make no appearances in the animated universe.
  • Mr. Freeze's original character design for Batman: The Animated Series was done by comic book artist Mike Mignola, at the request of Bruce W. Timm. Like Mr. Freeze in this episode, Mignola's own comics feature at least two characters who exist as disembodied heads attached to robotic bodies: Herman von Klempt, a mad Nazi scientist whose head is kept in a glass jar, and The Amazing Screw-On Head (2006) (TV).
  • Clark Kent and Lois Lane can be seen in the background at the park in the scene after the ventriloquist goes up the stairs from the subway into the park.
  • The episode is directly based on the comic book story "Joker's Millions," first published in Detective Comics #180 in February 1952.
  • The male candidate for replacement Harley is show writer Paul Dini
  • The Fake Harley bares a resemblance to comedienne Fran Drescher, both physically and vocally.
  • The scene where Joker uses lawyers to buy his freedom is a satire of the O.J. Simpson murder case. One of the Joker's lawyers resembles Johnnie Cochran, one of Simpson's lawyers. The lawyer's statement, "If a man's filled with glee, that man must go free!" is a clear parody of Cochran's now-famous catchphrase "If the glove does not fit, you must acquit!"
  • The Joker's called his Hyenas' Bud and Lou. Named after the two legendary comedians Bud Abbott and Lou Costello.
  • Calendar Girl is voiced by Sela Ward, an actress who, at the time this episode was made, was conducting a protest campaign against Hollywood's emphasis on youth and its harmful effects on public perception. This episode - the villainess of which is a beautiful woman who has nonetheless been cruelly marginalized after she "turned 30" - could be construed as part of the same campaign.
  • The Demon smashes the window of the Kirby Cake House to steal some cake for Klarion. The name, "Kirby Cake House", is a reference to Jack Kirby, the man who created The Demon.
  • This was the last project Stephen Wolfe Smith starred in.
  • This is the only episode of The New Batman Adventures that features all four team members in costume.
  • During the final scene it is implied that Commissioner Gordon knows that Barbara is Batgirl, further confirmed during the DVD audio commentary for this episode.
  • The lawyer hired by the villains is the same one from "Joker's Millions." He is a parody on Johnnie L. Cochran Jr., one of the lawyers on O.J. Simpson's defense team during his trial. Much like in "Joker's Millions", Johnnie's infamous line "If the glove doesn't fit, you must acquit" line is parodied as "If the Bat's on a spree, Wayne must pay the fee."
  • Paul Dini said that he got the inspiration for writing this episode while watching The Simpsons, even though this isn't a funny episode.
  • Two of the names that Cassidy's agent suggests for her new tour are "Heatwave" and "Firestorm", two fire-based DC characters.
  • Barbara makes reference to the WB television show Pinky and the Brain when talking to Bruce on the phone. Ironically, Bruce doesn't understand her joke.
  • The newspapers within this episode have two articles referencing show creator Bruce W. Timm and Superman (tying in with Superman : - The Picture News (B.T. Quotes: "DVD the next 8-Track") - The Daily Planet ("Superman's hands are full").
  • In the comics, Thomas Blake was the villain known as Catman.
  • A kid named Joel associates Batman with "tight rubber armor", and "a flashy car that can drive up walls", both references to Batman Forever, which was directed by Joel Schumacher.
  • The two fantasy stories of the Batman are directly based upon Bill Finger (II) and Bob Kane's and artist Dick Sprang's version of the Batman from the fifties and sixties, and Frank Miller (II)'s version of the Batman from the eighties. The episode as a whole is based upon a similar story with the same title by 'Denny ONeil and Neal Adams from the seventies.
  • The second fantasy is based directly on two scenes from Frank Miller (II)'s "The Dark Knight Returns", and many of the lines are adapted verbatim, including "This isn't a mudhole; it's an operating table. And I'm the surgeon." and "Rubber bullets. Honest."
  • The producers considered doing an additional tribute to the third major period of Batman, the gothic 1970s stories written by 'Denny ONeil and drawn by Neal Adams. However, they decided that it would not be practical to attempt to emulate Adams' realistically naturalistic drawing style for animation.