The ; Lives!

This NYTimes story scores high on unintentional humor (though I'm not really sure it's unintentional):

It was nearly hidden on a New York City Transit public service placard exhorting subway riders not to leave their newspaper behind when they get off the train. "Please put it in a trash can," riders are reminded. After which Neil Neches, an erudite writer in the transit agency's marketing and service information department, inserted a semicolon. The rest of the sentence reads, "that's good news for everyone." ... Geoffrey Nunberg, a professor of linguistics at the University of California, Berkeley, praised the "burgeoning of punctuational literacy in unlikely places."

I, for one, use semicolons frequently; the ability to juxtapose thoughts in writing as seamlessly as in speech is invaluable.