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An oft-submitted ZIP code in online forms which request personal data for illogical reasons, like getting the latest software update to RealPlayer.

Not surprisingly, however, this is a real ZIP code somewhere in the United States, and it happens to belong to the city of Schenectady, New York.

Also the title of a much-loved song from Sesame Street, which goes a little something like this:

One two three four five, six seven eight nine ten, eleven twelve
One two three four five, six seven eight nine ten, eleven twe-e-e-e-e-e-lve
One two three four five, six seven eight nine ten, eleven TWELVE!

Accompanied, of course, by some really psychedelic pinball animation.