Wife Swap (UK)
Wife Swap is not a competition or a contest. It is a reality show unlike any other, where the battlegrounds are the kitchens and living rooms, child-rearing is a subject of intense and heated debate, and the outcome isn't a cash prize, but a couple's opportunity to re-discover why they love each other and decided to marry in the first place. In the first week of the swap, the wives move in with their new family and adopt their very different lifestyle. But then, in the second week, everything changes. The new wives take charge. They introduce their own set of rules and get to run the new household their way. At the end of the show, the two couples meet for the first time. In a highly-charged exchange of views, both couples make a frank assessment of each other and talk about what they've learned from the experience.
More information: IMDB