One of the basic building blocks for the TV Universe is the cliche. Repeated often enough, it becomes mythology, religion, science. But at the beginnings of every cliche lies a True Moment.
Pregnant woman trapped in elevator goes into labor.
Previously unknown identical twin is evil.
Cops have either a handicap, a gimmick, or a strange last name.
TVSquad.com has put together a list of the top five sci-fi TV show cliches:
Check it out and see if you can come up with your own additions.