Jeff Greenfield; Ken Burns; Wendy Wasserstein

Jeff Greenfield takes stock of the 1992 election as Ross Perot prepares to formally enter the race—plus a special programming note from Charlie on the first anniversary of the show. Filmmaker Ken Burns on why he's "possessed" by American history. Pulitzer Prize-winning playwright Wendy Wasserstein describes the creative process and her play "The Sisters Rosensweig," currently in previews.