Whether it was the mystery of the hatch, the Man in Black or a flash sideways, few shows have ever kept viewers guessing quite like Lost. The ABC hit, which centered on a group of plane crash survivors landing on a mysterious island, aired for six seasons from 2004 to 2010. The sci-fi drama was a cultural sensation and one of the most impactful TV series of its era - a time when those DVD box sets sparked the early days of modern binge-watching.