Gogglebox:

Gogglebox is a reality show in which we see viewers reviewing tv series from the week.
We see many a family reacting to the shows and giving their own opinions.
We as the audience also get to see snippets of the shows they watch. On initially hearing of the show where family's are being filmed watching shows with a voice over that describes what they're doing, we may think it to be slightly boring and pointless. However after actually watching, it can be quiet entertaining. It's interesting to see when some of the families or friends have the same views as you. This along with the close up shots make it feel very personal and as if we are watching along with them.
As the viewers are watching a variety of shows from Strictly come Dancing to the Secret life of the Zoo, to the News, there isn't really a specific genre to the show which would keep the audience intrigued every week. Instead of watching the entirety of shows we may not like we get to see snippets of the best bits along with quite comedic comments from the people on the show. The show can go from quite serious to humorous very quickly, again keeping the genre very different and reflecting real life.
The families all come from different backgrounds, for example one family lives in Cambridge and another in Derby. By including groups of people from a variety of areas, a wider audience is reached and allows them to relate to the people in the show.
Using a good range of ages as well as different ethnicity's and class also helps reach a wider audience.
By letting the audience have an insight into the viewers homes, it allows us to see they're home lifestyle which is something some viewers may find interesting. We also get to know a bit about the participants while they have conversations amongst themselves about things that are not to do with the shows they watch. As the viewers are on the shown repetitively throughout the series we begin to feel closer towards them and have different viewings and opinions of the families. Just as they are reacting to the shows, we are reacting to them.
There may be similarities to the audience and viewers which may keep them tuning into the show weekly as they feel they know them slightly.