http://www.slate.com/blogs/browbeat/2014/04/17/parenthood_season_finale_watch_the_season_3_episode_nora_of_the_nbc_show.html

That it’s the “Seinfeld” of dramas makes the NBC series easy to jump into.
Read more at http://www.hitfix.com/tv-tattle#LxKYmYEUfBppeXwE.99

I guess you're right about that. 6.1 was the first episode I watched, I enjoyed it overall (even though I was a little confused about character relationships) and I will probably watch the show from the beginning. I would say that Seinfeld is easier to jump into because each episode is very self contained, it seems that the larger issues are more important with Parenthood.