Took a cinema class once about 10 yrs ago. Most of it was “highbrow exploitation” as the prof put it - stuff like “Demonlover” from france or “Bad Education” from GOAT Almodovar.
However, we did two weeks where we basically did 70’s porn - watched Deepthroat and then also an arty film where a guy jerks it to some gay porn from the 80’s maybe? I think it might have been called k-y-p or something like that? I can’t remember, sadly.
Granted, we also had some total bangers early on - “Man with a Movie Camera,” “Germany Year 0,” “Breathless.” and “Peeping Tom.” For a class on “Spectatorship”, though, you eventually have to deal with porn.
If you’re analyzing the viewer (rather than the text) then sometimes porn can be an object of analysis.