In a recent Entertainment Tonight interview, Lisa said:
"The one thing I realize with this show is you see the person that's gonna be taking this journey and then not long after that it's really the story of their long-since-dead relative and then you start getting invested in those people and that story…"
When asked if she sensed a surge of people wanted to go back in time:
"Absolutely… [NBC executives] were logging on to find out about their own family because it's very compelling… you find out even more, that you are actually very connected to some major events in world history that you thought happened to strangers."
Lisa's Chart: Cancer Rising
It can be quite eye opening for her to see how her understanding of her origins colors the way she perceives the world (Ascendant). Her south node in Capricorn, although in the 7th house of partnerships, can indicate a tendency toward personal emotional withdrawal even as she takes care of others she feels obligated to. Moving toward her north node in Cancer can mean learning to embrace self-nurture, since Cancer is a sign that's built to nurture whatever it chooses to give its heart to (in this case, it needs to be the self due to its placement in her first house). However, how we nurture and how we have been nurtured create a full circle, so Lisa is finding out who she is through where she comes from.
Venus plays an interesting role here and speaks the loudest when it comes to understanding Lisa's interest in the show. Venus is about feeling connected by being able to relate to someone, so it's no surprise that the show is not a dry, 'just the facts' kind of show with an impersonal narration, but has a very personal feel and is more about the story of the ancestor. Lisa reveals it above in her interview when she talks about feeling connected to something that you thought happened to a stranger, implying that once you realize your connection to your ancestor, their humanness and what you share between you (albeit over a distance of time), they are no longer a stranger, but truly family.