A rather amusing/frightening story. President Kennedy ordered code-based locks placed on every US nuclear missile. Strategic Air Command told DC they'd done it, then got around to installing them on some missiles in 1977 and set the launch code for every missile to the same number: 00000000.
All of the Spaceballs jokes are being made over at Fark. I have a vision of rewriting those Hollywood action movies to where the bad guy steals the nuclear launch codes, takes a glance at them, hands them back, and says "You guys have problems."