Original sentence: Reiser has written two books:  Couplehood, about the ups and downs of being in a committed relationship, and Babyhood, about the toils and joys of having a baby
Edited sentence: Reiser has written two books:  Couplehood, (which is extremely well known) about the ups and downs of being in a committed relationship, and Babyhood, about the toils and joys of having a baby