Bill Nye, Jack Osbourne, Elizabeth Berkley Lauren round out the new crop of contenders
Doctor tells "Today" that actress' cancer is almost in remission
Former "Rhoda" star, 74, revealed she has terminal brain cancer in March
The former "Rhoda" actress will play a bed-and-breakfast owner in TV movie based on Ronda Rich novel
Hour-long documentary hosted by Meredith Vieira will chronicle Valerie Harper's battle with the disease
Terminally ill Valerie Harper to join Mary Tyler Moore, Cloris Leachman, Betty White and Georgia Engel on upcoming episode
Valerie Harper will be joined by her husband and "The Mary Tyler Moore Show" castmates on "The Doctors"
"I don't think of dying," Harper says