I watched a lot of bad TV when I was at school. I'd watch sitcoms about pre-teens, and my dad would catch me and say, oh that looks really challenging. But then at 19h30 he would reclaim the television set to watch Les Guignols de l'Info, France's version of Spitting Image. There are a lot of bad things on French TV, but the brief window when all of France has access to the paying Canal + channel supplies among the best shows.
Two favourites: Les Guignols de l'Info, and Zapping, a medley of TV clips cut in a way to highlight television's idiocy. The only downside of watching these shows on the Canal+ website is you have to sit through an advert before every show.
The image is from my new blog.