Software

A software bug (or just bug) is an error, flaw, mistake, failure, or fault in a computer program that prevents it from behaving as intended (e.g., producing an incorrect result).

So; what are the most memorable bugs in popular culture:

* In the 1968 novel 2001: A Space Odyssey (and the corresponding film), a spaceship`s onboard computer, HAL 9000, is programmed with two conflicting objectives: to fully disclose all its information, and to keep the true purpose of the flight secret from the crew. This conflict causes HAL to eventually try to kill all the crew members (since, if there were no crew, there would be no contradiction).

* In the 1984 song 99 Red Balloons (though not in the original German version), bugs in the software lead to a computer mistaking a group of balloons for a nuclear missile and starting a nuclear war.