Marlon Wayans, Ginni Rometty, Dr. David Agus

Marlon Wayans, actor and guest host of THE DAILY SHOW.Ginni Rometty, former IBM CEO and author of Good Power: Leading Positive Change in Our Lives, Work and World.Dr. David Agus, CBS News contributor and author of The Book of Animal Secrets: Nature's Lessons for a Long and Happy Life.