Kristin Chenoweth, who originated the role of "Glinda" in "Wicked" in 2003, shares the three things that make the musical still popular today. Even though the show received "mediocre" initial reviews, the actor said she knew it would become a success. "I remember telling Idina [Menzel], after our opening night… 'It doesn't matter because you defy gravity, girl, at the end of act one, against all odds," the Broadway vet said. To hear more from Chenoweth on "Wicked," her life-altering on-set injury, and her new book, watch the full episode: www.salon.com/tv/video/3d580o