The 'Newhart' Finale Is One of Bob Newhart's Crowning AchievementsThe finale has become so famous in part because it offered a rare moment of real surprise from a taped prime-time television sitcom.
Source: The 'Newhart' Finale Is One of Bob Newhart's Crowning Achievements (https://www.nytimes.com/2024/07/18/arts/television/bob-newhart-finale.html)