One thing I haven't seen mentioned in this thread is Ali's sister and family as a unit. Raya seemed so level-headed and caring. They also (except the brother at times) seemed very at ease with the cameras. It was really a pleasure not to see another nutty family or wacko mom. Her mother and father, whom we know are divorced, didn't interact with each other, but there was no obvious tension. Mom, dad and sister each had a personality, they weren't caricatures and I thought their segments were among the most "real" of the show.
Did Ali ever mention her grandmother this season? I remember during her HTD with Jake, how important it was for Ali to take Jake through her house which still had her possessions even though she had died. Maybe it would have been too depressing, given the emphasis on Chris' mother, but I was still a little surprised she was never mentioned (that I recall.)