Annette Benning was cast as Catwoman but was replaced by Michelle Pfeiffer when she became pregnant.

At the beginning of the film, Pee-Wee Herman makes a brief cameo as The Penguin's father.

Probably in order not to spoil the effect, Danny DeVito was forbidden to describe the Penguin's makeup to anyone, including his family.

Michelle Pfeiffer said that she went through roughly 60 catsuits during the 6 month shoot. Each one cost $1,000. Submitted by Hamster

Sean Young very much wanted the role of The Catwoman. During pre-production she arrived at the studio in a Catwoman costume to confront the makers of the movie. She used other people scouting the studio grounds, using walkie-talkies to communicate, to track down the producers.

The shot where the monkey walks down the stairs to give The Penguin the letter from Batman took many shoots to complete, because Danny DeVito's makeup frightened the monkey. Submitted by Hamster

Michelle Pfeiffer has stated that they put tuna in her blouse, so that the cats would climb all over her in the alley, in the shots where they resurrect her as Catwoman. Submitted by Hamster

Christopher Walken's character, Schreck, is German for the word terror. Also, the same name, Max Schreck, was the real name of Count Orlok in the 1922 movie Nosferatu.

During the initial attack by the circus gang, you can hear a snatch of "Making Christmas", which is a piece of music from Tim Burton's "The Nightmare Before Christmas", also scored by Danny Elfman. Submitted by Jon Sandys

The massive Gotham City sets were all constructed so that could be mobile, and they were often shifted between days of filming. Michelle Pfeiffer said in an interview that she routinely got lost on her way to filming each day, because she couldn't find the correct set. Submitted by Hamster

Robin was originally supposed to be in this film, but was cut at the last minute. His story was that Penguin killed his family during the circus, and wanted revenge, but too many elements of revenge already existed in the film and it would have been overwhelming.