Let's face it, we're all fascinated by orgies. The idea of them gets the blood up. Sex Party Secrets promised a window into this netherworld, advising that such events are increasingly popular, that we're becoming a more liberated nation. At least, the rich are. The documentary's hashtag, #POSH ORGIES, lays down the parameters. This isn't about the world of paunchy, middle-aged suburban wife-swapping but, instead, parties that promise high-end glamour and ecstatic release, as recounted by the organisers, alongside the experiences of attendees.

There is nothing erotic or titillating about The Institute of Sexology, an exhibition the Wellcome Collection plans to keep open for a year. Those expecting a display of fertility symbols, fetish objects, kinky clothing or sex aids down the ages will be deeply disappointed. Just about enough objects and images are included to keep you interested, but the bulk of the show is not dedicated to sexual practices but to the 19th- and 20th-century doctors, anthropologists and psychologists who spent their lives studying sexual behaviour. 

A peculiar slice of 19th-century cultural life is mined to minimal effect in Effie Gray, a stillborn labour of love that doesn't justify the long slog from screenwriter and supporting player Emma Thompson required to bring this tale to the screen. It's not just that her husband, Greg Wise, is miscast in a part - that of the visionary critic, educator and sometime-painter John Ruskin - for which he's several decades too old.

At the risk of endorsing national stereotypes, I’ll still describe Yann Gonzalez’ feature debut You and the Night as a very French film. Its appearance in Critics’ Week at Cannes last year brought comparisons with Francois Ozon and Pedro Almodovar for a combination of style and sex, arguably at the expense of substance. And you can’t help feeling that the ghosts – it’s a work very much concerned with ghosts and fantasies – of Cocteau and Genet are lurking somewhere too.

The release of a restored version of 1974’s Immoral Tales on Blu-ray raises inevitable and unavoidable issues: whether the film is pornography, art or arty pornography. Then, there’s the matter of whether its director Walerian Borowczyk was a misogynist; an objectifier of women. Consideration of its qualities as a film can be lost in such debate.

Action film fans should stay away from this Roman Polanski duet. But those who like their sexual politics served in symbolic form will be delighted. Polanski's wife Emmanuelle Seigner stars as an actress, Vanda, and Polanski-lookalike Mathieu Amalric as the writer-director Thomas.

It's not entirely an adaptation of the 1870 novella by Leopold von Sacher-Masoch (from whom the word masochism derives), but a version of the David Ives play about the link between sexual obsession, pleasure and pain. 

Wolverhampton today, tomorrow the world. As unlikely as it was, that was the incentive for aspiring prize-winners in this first of three stories from Channel 4 looking at regional beauty pageants which in turn lead to Miss England and beyond.

Sex farce, class comedy, crime thriller, existential tragedy, supernatural shocker - Don Giovanni is, as Jonathan Kent notes about his production in the Glyndebourne programme, a cabinet of curiosities. Mozart's music hurdles to and fro across two centuries, the baroque 18th century and the disorientating romantic depths of the 19th; the characters are either stock (Leporello the comic sidekick, Anna the wronged virgin) or so subtle that they need redefining for every staging and every time (Elvira, and the lothario Don Giovanni himself).

For an artist who famously can't travel to America, Roman Polanski would appear to have an unstoppable passion for filming small-cast Broadway hits. On the back of Death and the Maiden and Carnage, both of which diminished their stage sources, along comes Venus in Fur, adapted from the David Ives play that had no fewer than three separate New York runs, making a star of its husky-voiced young leading lady, Nina Arianda, who won a 2012 Tony for her work.

As Literary Review's "Bad Sex in Fiction Award" recognises, there's not a lot that's funnier and more damaging to a story's credibility than an attempt to be sexy that falls flat or, even better, that misfires spectacularly. Some of the most famous movie duds - Showgirls, Body of Evidence, Boxing Helena, Colour of Night - which are beloved of course by a certain type of film enthusiast, this reviewer included, strive for smouldering and deliver mainly laughs.