Saga. Saga. Saga. I think this comic has been at the top of my list since it came out, and is still there. Brian K. Vaughan is a fantastic writer and Fiona Staples tells the story perfectly with her art. It's a grown-up (read: not ashamed of sex and genitals) comic about two fugitives from a galactic war (in which one side uses magic, btw), who started as soldiers on opposite sides and fell in love. I have never had so many feelings for a man with a TV for a head.
Lesser-known is 5Worlds, an all-ages Graphic Novel about a girl who practices the ancient magic called "Sand Dancing" and ends up tasked with restoring the five planets (hence, 5Worlds) that make up their solar system. It's quite phenomenal and anyone, like, ages 11 and up would find it really enjoyable.
I read a couple of other J Graphics (i.e. stuff meant for kids but that can be enjoyed by all) that I liked - The Deep & Dark Blue (fantasy world where two boys hide away in a magical monastery for girls, who weave the future), The Okay Witch (about a modern girl who finds out her mother is a 300-year-old witch), The Witch Boy (About a boy who wants to learn magic, when in his world only girls can learn magic, while boys learn shape-shifting). I started Black Bull of Norroway and really enjoyed it but I only read the first book.