I have a real problem with the phrase, "gratuitous nudity." Is any nudity really gratuitous? I think not. Nudity is an important part of any film, be it comedy or drama. It draws the audience into the story, entertains us, makes us like the characters. So what if the plot is not advanced?! Is anyone really thinking about plot when they are staring at a perfect set of taters on screen? Doubtful. If I pitch a tent in the darkened theater, then a film has done its job as far as I am concerned.
Therefore, I submit that nudity is as crucial a part of any film as lighting, sound, acting or script.
Thank you.