I'm really enjoying this show. It's rare than an American TV show will get me belly laughing. I love the quirky, interesting characters, and the chemistry between them. Each episode has a story, and there's also an over arching plot. The story is largely character driven, rather than the plot driving the characters.
There's a couple of odd episodes in there (e.g. S02E03) which missed the mark... But the show seems to know it too, as they just pretend that weird episode didn't happen, and continue with the story referencing all the other episodes but that one.