This series by Gywneth Paltrow's company is excellent. The first series was interesting, if a bit out there (not for me, but for some reason a lot of people can't handle anything alternative). However this second series concentrating on sex and love was fascinating. I learned a lot.

The most interesting couples were the first couple (Erika and Damon), and the two lesbian couples. Probably some people would consider the family constellations episode to be a load of rubbish, but *shrug* I say, take what works and leave the rest!

The trailer is a bit gratuitous, but I think there are very useful concepts in the series. It's not all titillation.