This is one of the best adult films ever. you have a perfect combination: Billian as an experienced director (who sees himself as something more than a gynecologist with a camera), brilliant Rhomberg with self-confidence and enthusiasm, the year 1975 and -at least some- money. as mentioned in other comments, this movie looks quite real. which means you have male actors around their fourties, female actors with no shaving/silicon and scenes without prolonged and extreme closeups of moving (body)parts... but also the fun they have seems to look more real.
