Evangeline Lilly Talks "Lost" End on Letterman

"Lost" star Evangeline Lilly totally spoiled the ending of the series on "The Late Show with David Letterman" Monday night (May 10).Now, there's a chance she could have been joking when, in the clip above, she tells Letterman -- who's hoping, for logic's sake, that it's all a dream -- that the show might all be a product of Jack (Matthew Fox) falling asleep while running through the forest."