Valerie Harper, who scored guffaws, stole hearts and busted TV taboos as the brash, self-deprecating Rhoda Morgenstern on back-to-back hit sitcoms in the 1970s, died Aug. 30. Harper was a breakout star on "The Mary Tyler Moore Show," then the lead of her own series, "Rhoda." She won three consecutive Emmys (1971-73) as supporting actress on "The Mary Tyler Moore Show" and another for outstanding lead actress for "Rhoda," which ran from 1974-78. Beyond awards, she was immortalized — and typecast — for playing one of television's most beloved characters, a best friend the equal of Ethel Mertz and Ed Norton in TV's sidekick pantheon. She was 80.