Fox is bringing Baywatch back with a rebooted show, new cast - and some familiar faces. Baywatch, which ran from 1989 to 2001, centered around the lives of lifeguards who worked on California (and Hawaii) beaches while dealing with a variety of situations including earthquakes, shark attacks and serial killers. At one point during its run in the '90s, Baywatch made history as the most-watched television series in the world. The series had dozens of cast shakeups over the years but ultimately turned into a cultural phenomenon.