Lost is one of the best sci-fi shows of the last decade, but if you're a longtime viewer, it can also one of the most frustrating. After an explosive start, it struggled to find a comfortable rhythm, answering its initial mysteries at the same time as introducing new ones, abandoning plot developments and new characters even as it constructed even more mythology. The release of The Complete First and Second Seasons on blu-ray not only affords viewers a chance to look back at the show with superlative presentation and bonus materials, but encourages them to revisit the beginning of the series as it—and they—discovered when and why it originally felt great to get lost. As a buddy of mine recently observed, Lost Season One seems almost quaint in retrospect—"Oh yeah, remember when they were just hanging out on the beach, arguing about what to do?" J.J. Abrams' pilot is one of the great first episodes in television history, achieving a level of cinematic sweep that would set the stage for all that followed. He deftly introduces a substantial ensemble—including Jack, Kate, Sawyer, Locke, Sayid, Hurley and others—while mounting a re-enactment of a destructive plane crash, and keeps their initial reactions to the events distinct and specific, providing a context for their behavior even before we quite understand it.