Considering the pop culture status that Star Trek has achieved over the decades, it is hard to fathom that the original series that started it all was not an initial success by any stretch of the imagination. And yet, it found its greatest prosperity long after it had been cancelled, as later generations realized just how compelling and unique the show really was. And, over forty years after its debut in 1966, its legacy is nothing short of astounding. Those 80 original episodes spawned five successful spin-off series, an animated Saturday morning series, and 11 feature-length films - not to mention enough books, toys and other merchandising to fill a small galaxy. Throw in the legions of loyal devotees known as "Trekkies," who congregate at conventions all over the world, and it becomes clear that Star Trek will continue to have an impact for years to come.