This week, Bob is besieged from all sides. Not only is Carol threatening to give notice to two of her four bosses, but Howard has given Bob a bad-taste gift -- and he expects to be praised for his largesse. Completing the canvas is the unscheduled appearance of a human fly. Shirley O'Hara appears as Debbie Flett. Written by Gary David Goldberg of Family Ties fame, "Et Tu, Carol?" originally aired on October 30, 1976, as the final episode in The Bob Newhart Show's familiar 9:30 p.m. Saturday time slot; thereafter, the series would be shown one hour earlier. ~ Hal Erickson, Rovi