20 Things You Didn't Know About Catwoman
19. The Halle Cat
In one of the nicer stories to emerge from the set of Catwoman, the cast and crew grew so close to Halle Berry that they started nicknaming her "the Halle Cat" (alley rhymes with Halle, after all).
Even though the film was a clunker, this was the first live action performance to actually present the character as being a woman who is also a cat. (Although, you could argue that the camp Adam West TV series and its spin-off film actually seemed to present characters such as Catwoman and The Penguin as being human versions of the animals that they chose to portray).
As such, whilst CGI was used to show Berry's pupils contracting to become those of a cat and her habit of running around the walls like a cat, Berry was also actually trained to move like a feline, including turning her entire head to physically look at things rather than just moving her eyes like a human would.