I had only seen perhaps one show, about a year ago (to catch Danica McKellar's character), before I bought the first season.
I must say this was a pleasant surprise. Well-written by Aaron Sorkin, who also wrote two Rob Reiner films "A Few Good Men" and "The American President", the depth of the political and social subject matter is very good.
As most people know, the series has garnered many Emmy awards.
Season two literally takes up where season one ended, thanks to the season one cliff-hanger ending involving an assassination attempt. Season two continues to investigate a wide range of issues - from drug-company motives and profits, political asylum for persecuted Chinese Christians, education measures, and the president's muscular dystrophy.
The series still has some humor amid the drama. In one scene, after three months, the president finally meets an attractive young Republican attorney in her White House basement office - as she is drunk and dancing and singing in her bathrobe. He gives her a greeting humorously suggested earlier by Rob Lowe - "Yeah, Ainsley. I wanted to say hello and to mention, you know, uh...a lot of people assumed you were hired because you were a blonde Republican sex kitten, and, well, they're obviously wrong. Keep up the good work."
Waiting for season three.