Due to my recent tonsillectomy, I actually had time to watch it... and wow! Quite possibly the best superhero show ever! (And this is coming from a DC guy).
It's a great character driven story but also has some pretty positive portrayals of Christianity (with a Roman Catholic backdrop).
(Note: Rated TV-MA for some language, and violence. And I think some quick partial nudity in the first episode... but I looked away so I'm not 100% sure about it... it was quick.)