Call the Midwife
Set in the poverty-stricken east of London in the 1950s, you would be forgiven for thinking that Call the Midwife is a wholesome, gentle Sunday-night drama. But don't be fooled: though it can stray into sentiment, it packs more punch than you might be expecting. It's based on a real-life biography and the latest series has had viewers sobbing into their sofa cushions during every episode.
Watch it on Netflix, and don't forget tissues.