This episode's headline: Giving Thanks; A New Joy; Dealing with Feelings; Abuse of Power. ANCHOR: PHIL PONCE; GUESTS: ROBERT PINSKY, Poet Laureate; MARIA GUARNASCHELLI, Editor, Joy of Cooking; BARBARA HABER, Radcliffe College; JERALD CHESSER, Chef John Folse Culinary Institute;GEORGE TILLMAN, Jr., Writer/Director, ""Soul Food""; STANLEY KUTLER, Author, Abuse of Power; CORRESPONDENTS: LEE HOCHBERG; PHIL PONCE; BETTY ANN BOWSER; MARGARET WARNER;