I finished watching and live tweeting Girls last night. I thought the first season was very good. I didn't much like the dark turn in the last two episodes--we somehow got more of Adam, and not enough of Adam--but overall I really enjoyed the show and look forward to watching Season Two a year from now.
It's worth comparing the first season of Girls with the first seasons of other HBO comedies like Entourage and Sex and the City. I would go so far as to say Girls was better than both of those first seasons, better than anything I ever saw on Entourage in any season, and perhaps better than anything I saw on SATC at any point too. Girls has no real need to sugar-coat Hannah's self-esteem issues or make us think that she actually, deep down, loves Adam. Hannah is a predator--as we all are predators--and she isn't asking us to admire her. I always felt SATC (and certainly Entourage, which was a much worse show) was trying to convince me of their awesomeness or the awesomeness of New York or L.A. Girls just wanted to tell me a story. I love the modesty of the task.
I didn't really understand how often Lena Dunham was nude on screen, or how often she did sex-scenes. If you take that in with the sex scene between her parents, what you have is one of the most democratic--and everyhuman--depictions of sex to ever exist in pop culture. The more I thought about this, the more important it became to me.