Kate finds Sayid.
Sawyer, Michael & Jin try to climb out of pit, but big black dude tosses Ana-Lucia down there. (I think his name is Dr. Ako.)
Jack thinks it's impossible that the world will end if they don't fix the computer. Locke thinks it's impossible that Desmond recognized Jack.
Jack and Locke watch the old film, which shows a Dr. Marvin Candle explaining the instructions for the computer at Station 3. It's part of the Dharma Project.