Barbara Walters makes her final regular appearance as co-host of the daytime talk show she founded, on the day ABC devotes a total of three hours (two in prime time) to her official television farewell, after many storied decades on NBC and ABC. But three hours is a conservative estimate, since she’ll also be toasted on Good Morning America and, most certainly, ABC World News with Diane Sawyer. On The View, Walters’ final guests include Sally Field, James McAvoy, B.J. Novak and John Leguizamo.