(may be considered spoiler if you haven't seen season 1. you are warned!)
This is clearly one of the best written series ever. Each episode goes by very fast, and the plot is still interesting. I watched the entire season 1 in one day, I was so hooked on it. It is well written, and pretty well directed. Most actors are not that known, other than Mary Louise Parker and Elizabeth Perkins. Hunter Parrish is very good as the eldest son, Shoshannah Stern as his deaf girlfriend is brilliant and Martin Donovan as Nancy's boyfriend is also excellent. The rest of the cast simply fits, and all characters are well acted and actually quite believable. The entire plot of the series is fantastic.
The music of season 1 is particularly charming (the theme song is great), however season 2's theme song as interpreted by different artists, just doesn't appeal to me.
All in all, the best series ever seen in at least 20 years (for me anyway).
Thank you to my friend Jessica for having recommended it!
10/10