A passionate sex scene with Derek and Sharon was written in the original script, but it was never filmed.
The character of Lisa suffers from a mental disorder known as erotomania.
According to the first draft of the script, the scene where Lisa seduces Derek in his car was originally supposed to be more sexually revealing than what was filmed.
Beyoncé had little difficulty preparing for her fight scene with Ali Larter despite not being a trained combatant, as she found that the fight choreography for the film was very similar to the dance choreography in her music videos. It was a challenging shoot for both actresses nonetheless, as Larter had to do the entire fight in just panties and a Jersey, while Beyoncé was wearing high heeled boots that could trip her.