We're in late Forties/early Fifties America and everyone's wearing light-coloured suits, looking clean cut and talking in momma's apple pie accents. A college professor and son of a Methodist, by the name of Alfred Kinsey (Liam Neeson), is causing a stir because he's talking frankly about sex and, naturally, students are flocking to hear him. Amongst his peers, sex is something done quietly in the bedroom, not a topic for public discussion, but biologist Kinsey thinks that's precisely where middle-class America is going wrong - people should talk frankly about it.

He is a man with a mission and on the publication of his 1948 book Sexual Behaviour In The Human Male he can't get enough of finding out about different encounters. To him, sex is about biology and different learning curves. Divorcing himself from feelings, he comes up with a weird comparison between human beings and galliwasps.

Kinsey (the film) is particularly good early on when it exposes the misinformation being put out under the guise of sex education, highlighting misconceptions and prudish puritanical attitudes of those who prefer the subject not to be discussed.

Later the film loses its confrontational aspect, although remains enjoyable. It is more sex as a library topic than anything titillating. Neeson and Laura Linney, as Alfred's wife, do what they can with the limited, slightly dry material.

Ultimately, whilst Kinsey is an amusing, eccentric type, he's still like a lab-coat scientist and a man of his time and you'd have to be interested in the subject matter, or perhaps have lived through the period, to get much out of it.