The two lines spoken by Madonna's character in the 'hot wax and champagne' scene ("My way", and "Are you scared?"), are also lyrics from two of her songs recorded around the time this film was released (the songs are 'Erotica' and 'Justify My Love', respectively).
In an interview about this movie with UK Film Threat magazine in April 1993, director Uli Edel stated that while other actresses approached for the role of Rebecca Carlson balked at the explicit nature of the sex scenes, Madonna had her agent pursue the role for her, and Madonna told Edel that no matter how far the scenes would go, she would "always go a step further". Edel also confirmed in the same interview that Madonna refused to take direction for the sex scenes.
In interviews, Madonna stated that she found filming the sex scenes "scientific, not sexy at all", but co-star Willem Dafoe admitted that he was "turned on despite himself" while filming the scenes.
When Frank approaches Rebecca as she is lying on the bed and takes off his shirt, the cuffs of the shirt are suddenly unbuttoned (presumably so it would be quicker for the actor to remove), when they were buttoned previously.
Robert Garrett: She is a beautiful woman. But when this trial is over, you will see her no differently than a gun, or a knife, or any other instrument used as a weapon. She's a killer, and the worst kind. A killer who disguised herself as a loving partner!
What are the differences between the R-Rated and Unrated Version?
A
This pretty boring (non)erotic thriller with superstar Madonna was released as R-Rated and Unrated Version, but the "more explicit" footage is quite boring as well. A detailed comparison between both versions with pictures can be found here.