As ABC's hit show "Roseanne" gears up to return to television this spring, the entire cast reveals behind-the-scenes moments, memories, and what to expect from the revival of one of TV's most iconic sitcoms in a special edition of "20/20." Returning actors Roseanne Barr, John Goodman, Laurie Metcalf, Sara Gilbert, Lecy Goranson, Michael Fishman and Sarah Chalke discuss the show's legacy and share what life was like starring on the No. 1 show.