Macintosh Y2020 (via lobste.rs).

During the peak of the Y2k brouhaha, Apple ran an advertising campaign bragging that the Macintosh was immune from such problems. They ran a television ad during the Super Bowl in January 1999. In it, HAL, the fictional computer from the film 2001: A Space Odyssey, explained that the millennium bug was caused by bad judgement on the part of programmers. By implication, Apple’s ad claimed that their programmers were better, and did not make mistakes like that. It was... not exactly accurate. Maybe nobody told the ad company that Apple had planted a similar time bomb into their operating system. It was just set to go off 20 years later.