PEOPLE WHO WERE ALREADY DEAD
Jack: Enough about Jack, no update needed.
Juliet: She goes on to marry Sawyer in afterlife part 2. She runs into Jacob one night at a Sushi restaurant. After some saki bombs, he reveals he wouldn't let woman have babies on the island because his own mother died after childbirth. Juliet slaps him.
Locke: Locke opens a walkabout company in afterlife part 2. Nightly boar feast and luau included in cost of package if you buy right now!
Sun and Jin: Live together in afterlife part 2 where they never speak Korean again. They sell oxygen tanks for submarines specifically designed for unconscious people.
Sayid: Lives a slightly fulfilling life with Shannon. They live in the suburbs of afterlife part 2 and join a really WASPy country club.
Charlie: Afterlife 2 treats him well. He has 4 kids with Claire, and teaches music classes.
Shannon: Eventually dies of an asthma attack and ends up in afterlife part 3.
Boone: Wanders around awkwardly, smiling and giving everybody hugs. Sometimes he sleeps with Shannon.
Alex: Stays in afterlife part 2 until she eventually finds Karl. They date for a while, but grow apart after she leaves for college at Brown. She eventually meets Detective Miles and totally hits that.
Rousseau: Marries Dr. Linus and cooks him french food in afterlife part 1. They have adopt a baby named Pierre. They abandon him after Rousseau and Alex remember the island and they move on to afterlife part 2.
Daniel Faraday: Wins over Charlotte with his super awesome muzak.
PEOPLE WHO MAYBE NEVER EXISTED
David (Jack and Juliet's son): Gets abandoned by his dad and mom mysteriously one day after his grandfathers funeral. He has a lot of issues about it until he crashes on a strange island with a group of strangers (including Sayid's niece and nephew!).
PEOPLE WHO DIED IN THE FUTURE
Kate: Escapes on the Ajira jet, and helps Claire raise Aaron. Dies in a tragic run away ferris wheel accident.
Sawyer: Starts a blog called Nickname. It is epically successful for its one liner wit.
Miles: Finds a bag of diamonds in his pocket after landing on the Ajira flight. He becomes CEO of Oceanic airlines, but is removed after a duct tape repair scandal.
Claire: Runs a decorating company specializing in goth themed baby furniture in Beverly Hills.
Desmond: Escapes successfully from the Hugo-run island after Hugo decides to install a Star Trek-like transporter with his island magic. Lives happily with Penny and his son.
Richard: Sells eyeliner for men.
Lapidus: Works in Vegas as a Kenny Loggins impersonator, and writes a weekly conspiracy theory newsletter.
Walt: Uses his angst from his parents absence to start very promising acting career as a vampire on the CW. His strange magic powers that scared his stepdad in the first season really help him in his role.
Aaron: The dire warnings about him not being raised by his mother turn out to be wrong. He becomes a very successful marine biologist and is rumored to be dating Walt from the CW.
Ji Yeon: She channels her angst over her parents death into becoming the first female leader of the Korean mob. Think O-Ren Ishii in Kill Bill, Part 1.
Ben: Makes a lot of number 2 jokes with Hugo, especially after finding out from Desmond that the island is just a big clogged toilet.
Hugo: Hugo acts as the island protector until 2537. He is eventually replaced by Jar Jar Binks in an even more upsetting finale.
--By Farrah, who is 26 tomorrow