10 Surprisingly Canceled TV Shows

'Star Trek'
'Star Trek' has an impressive legacy, but the original series was actually dropped after just three seasons and 79 episodes. It went on to thrive through syndication and spin-offs. CBS Photo Archive/Getty Images

You'd think NBC would take the hint. When it dropped "Star Trek" after just two seasons, the viewers rebelled. A nationwide letter writing campaign convinced the reluctant network to bring the series back for one more year. But ratings declined, the show faced budget cuts and it was assigned the less-than-optimal 10 p.m. timeslot on Friday nights. Thanks to this, "Star Trek" was done after season three.

Or was it? The legacy of the show lives on. Although it had only 79 episodes, "Star Trek" was very popular in syndication. Over time, the franchise expanded to five more TV series, including "Star Trek: The Next Generation" and "Star Trek: Deep Space Nine." More than 10 "Star Trek" movies later appeared in theaters. Some featured the original cast, while others re-booted the series with a new spin on the story. Turns out, the little sci-fi show struggling to survive is certainly struggling no more.