Lost
There is a 108 percent chance you were screaming at your TV 10 years ago. Why? Because that's when Lost's final episode aired, instantly becoming one of the most polarizing series finales of all-time. After six seasons of questions, mysteries and backstories, the journey of the passengers on Oceanic Flight 815 came to an end, with J.J. Abrams, Damon Lindelof and Carlton Cuse choosing not to answer many of the show's burning mysteries, much to some of the obsessed fans' chagrin.