1) Game of Thrones
Of course I'm including one of my all time favorite TV shows, based off one of my all time favorite book series. I love Game of Thrones. I'm not ready for it to to end.
2) Big Little Lies
This is the only one of my picks where I didn't read the source material but I'm sure I will some day. This series was amazing. Beautifully acted and paced. I'm interested in what they do with season two.
3) The Handmaid's Tale
This is an instance where I think the show is far better than the novel. It just expanded on so much and answered nearly every question the novel didn't. The show is better by a long shot.