In this web extra conversation, our Week in Review panelists chat about Michelle Obama’s trip home to Chicago to promote her “Let’s Move” anti-obesity campaign. They also weigh in on the First Lady’s surprise turn as a presenter at the Oscars.

The First Lady’s role in the public imagination has changed dramatically since her husband was first elected. We look at the deeper meaning behind her image.

We take a look at Michelle Obama's multicultural ancestors with the journalist and author who uncovered the First Lady's family history.