This show was incredibly refreshing for me in terms of adult-focused animation. The character development is pristine. The humor had me in tears again and again. The voice actors are amazing! Fitz and the chief are by far my favourite characters. This has become one of my favorite shows of all time. It's filled with so many subtleties you'll have to watch it a few times to catch them all. It's pretty crude but despite that, the humor feels sophisticated and thought out. Highly recommended.
EDIT for SEASON TWO:
Season 2 has been a disappointment. I feel like they went overkill with the crude humor and none of the magic from the first season. Season 2 has made me laugh maybe once and made me cringe 100 times. Might actually be done with this show.