Not with My Sister You Don't - S1-E19
Character mistake: Howard Borden goes to Bob's office and says it's the first time he's been there. In fact, he had come to the office to address Bob's "fear of flying" group in the first episode.
The Bob Newhart Show (1972)
1 character mistake in Not with My Sister You Don't - chronological order
Starring: Bob Newhart, Suzanne Pleshette, Bill Daily, Peter Bonerz, Marcia Wallace
Genres: Comedy
Not with My Sister You Don't - S1-E19
Character mistake: Howard Borden goes to Bob's office and says it's the first time he's been there. In fact, he had come to the office to address Bob's "fear of flying" group in the first episode.
Howard Borden: I was, uh, just decorating my Christmas tree and I was wondering, is there a trick to stringing cranberry sauce?
Trivia: While Bob Newhart is a father himself, he was adamant about Bob Hartley not having any children. When the writers told him they wanted to introduce a child in season six, he told them the script was good, and then asked them who was going to play Bob.