I think it's because it's so different and it takes risks. Plus it's really smart humor. It gives the audience credit in terms of not needing to tell them when to laugh. I love that about the show. There's no laugh track.
The arc of American history almost inevitably moves toward freedom. Whether it's Lincoln and the Emancipation Proclamation the expansion of women's rights or now gay rights I think there is an almost-inevitable march toward greater civil liberties.
