“On November 17, 1968, the Oakland Raiders score two touchdowns in nine seconds to beat the New York Jets—and no one sees it, because they’re watching the movie Heidi instead. With just 65 seconds left to play, NBC switched off the game in favor of its previously scheduled programming, a made-for-TV version of the children’s story about a young girl and her grandfather in the Alps. Viewers were outraged, and they complained so vociferously that network execs learned a lesson they’ll never forget: “Whatever you do,” one said, “you better not leave an NFL football game.”