I enjoy The Great British Bake Off and to some extent The Great British Sewing Bee, Antiques Roadshow. Much of what I think you mean by light entertainment I'm not really interested in. Some random examples would be most afternoon TV, the late afternoon quizzes, Strictly, The One Show, Dr Who, Eastenders, Call the Midwife, any reality TV.
I'm aware of many of these programmes because my wife watches them. It's something I can't grasp. A very intelligent woman with many, many interests will watch what I regard as awful TV. She will shout at the contestants on Tipping Point if they don't time the counter drop properly. I ask you.