LOST - "The End" - One of the most critically-acclaimed and groundbreaking shows of the past decade concludes in this "Lost" Series Finale Event. The battle lines are drawn as Locke puts his plan into action, which could finally liberate him from the island, on "Lost," SUNDAY, MAY 23 (9:00-11:30 p.m., ET) on the ABC Television Network. (ABC/MARIO PEREZ) JOSH HOLLOWAY, ELIZABETH MITCHELL