Heidi

From the November 17, 2006, installment of The Writer's Almanac:

It was on this day in 1968 that NBC executives made one of the worst broadcasting decisions in the history of network television, interrupting their coverage of a football game between the Oakland Raiders and the New York Jets in order to show the scheduled movie, Heidi, about an orphaned girl who goes to live with her grandfather in the Swiss Alps. There was one minute left in the game and the Jets were leading by 32 to 29, when NBC went to a commercial. No televised football game had ever gone longer than three hours before, and executives weren't sure what to do. Timex had paid a lot of money to advertise during Heidi, and network executives figured the Jets would win the game anyway, so after the commercial break, the movie began. Football fans were enraged. So many people called to complain that the NBC telephone switchboard in New York City blew 26 fuses. People were right to complain. What they missed was the Raiders coming back to score two touchdowns in the final minute, winning the game 43 to 32. It was that game, and the storm of protest by fans, that forced TV executives to realize how passionate the audience for football really was. Two years later, networks began showing football on Monday nights as well. And because of that game, the NFL now has a contract with the networks that all football games will be shown until their completion.