The unpleasant noise you may or may not have heard at 11:30 p.m. on May 10, 2010 was the sound of millions of Lost fans groaning at the conclusion of the era-defining show’s six-season run. To be fair, not everyone groaned about the finale. Some viewers were moved to tears; others probably just shrugged, went to bed, and never thought about that freaky island and its unfeasibly attractive castaways ever again.