I have watched a couple of series recently with female presenters. One about "Servants" and another "Divine Women" about women and religion. They were both enjoyable, interesting documentatries. But I noticed the attractive, intelligent presenters seemed to find the need to smile alot of the time at the camera, even when completely inappropriate e.g. commenting on something quite sad or difficult. The presenters were serious academics so why do they feel the need to do this smiley thing? I don't think male presenters are always smiling in this way unless something is really amusing.