The BBC website has an interesting article about the style and role of sex education films, including a video of 'WHATSOEVER A MAN SOWETH' (1917) which it describes as 'a bit more Shakespeare than sex education'. This article suggests a fascinating area of research for those with an interest in the role of visual resources for educational purposes, or indeed perceptions of sex.
More info at http://news.bbc.co.uk/1/hi/magazine/7892257.stm
