A lot of spin-offs never really make it. They’re DOA back-door pilots that people hate, or sometimes they get maybe a season or half-season, and sometimes you get lucky with an Angel or Star Trek: The Next Deep Space Enterprising Voyager. Actually, Star Trek seems to have the best success with their spin-offs. But there are some that become so big, that they totally eclipse the original in both popularity and cultural influence. Whether it’s because of a different demographic, or a particular performance, or just plain luck, these stories just seemed to grab audiences so much more than the originals, that the originals are all but forgotten.