Science is a big tent. It includes such topics as orgasms.
Mary Roach is the presenter in this fora.tv video. A psychologist and sex researcher, Mary is the author of several books, including her latest, Bonk: The Curious History of Science and Sex (2008). She takes this topic almost seriously, dishing out memorable stories along the way.
I read one of Roach's earlier books, Stiff: The Curious Lives of Human Cadavers a few years ago. I consider it a charming little foray into one of my favorite guilty-pleasure topics, gross-out uses for human corpses. It sounds like she tackled orgasms with the same balance of information and whimsy. The previous topic would have been more fitting at Bodies: The Exhibition, where it appears she staged this talk.