What makes a show "Binge-worthy"

The Girl is super pregnant and was just put on bed rest. Now she is trying to find things to binge so she doesn't get bored. This week we ask ourselves what are some great shows to binge watch. Some are good to watch week to week and some a great to try to achieve in one sitting. What aspects of the show contribute to this? Is it the story arc or the episodic ones?

What are some shows you recommend for The Girl to watch during her bed rest?