When Lost ends Sunday and reveals all (or at least most), a true obsessive is going to want to go back and rewatch all six seasons with a new retroactive understanding of what it all means. But that means dedicating more than a hundred hours to the task: Surely there are some episodes you can skip over, right? Right. As the finale has grown closer and the show's endgame has clarified, it has become clear which of the bygone episodes have no rerun value when it comes to studying the roots of the biggest Lost epiphanies. Herewith, the top twenty episodes you can safely ignore, as they lack character information, mythology, action, plot development, supernatural activity, or any combination of the above. Maybe you can use the time saved to watch some old X Files DVDs.