Buffy the Vampire Slayer started airing about seventeen years ago. Sorry if that makes you feel really old, but that's just the way it is. The supernatural teen drama was one of the first of its kind and a staple of 90s television. Without Buffy, a lot of the shows on right now probably wouldn't exist (hell, probably the entire CW network would never have developed). The WB took a chance on a fledgling showrunner with a program based on a campy early 90s teen comedy starring Kristy Swanson that tanked with audiences and critics alike. And from those humble beginnings, greatness occurred. Despite never having the hugest ratings in the world, the quirky show won over audiences and became something of a cult classic over the years. Even though it's been off the air for over a decade, the show has refused to totally go away, with a spin-off series starring David Boreanaz that ran for a respectable five years and a popular comic book series that picks up where the seventh season left off. The consistent quality of the show is a huge factor in its continued success: not every episode may be a gem (remember the awful cautionary tale about the dangers of internet predators/ancient demons back in the first season?), but overall Buffy the Vampire Slayer has a huge number of hits and comparatively few misses.