who played joanna on the bob newhart show
Mary Frann Mary Frann (born Mary Frances Luecke, February 27, 1943 â€“ September 23, 1998) was an American stage, film and television actress. Frann is best known for her role as Bob Newhart's wife, Joanna Loudon, on the CBS sitcom Newhart, which aired from 1982 to 1990.