Ok here’s the summary:
Locke turned out to be transexual,
the hatch is where they conduct alien experiments,
Shannon is the wife of Locke
Sawyer becomes the President of the United States
Kate ends up in a mental hospital
the smoke monster is the ghost of a pirate who died on the island
Sounds like one of Hurley’s dreams. :^)
BTW, you’re not very helpful.
No... that was Heroes...
Seriously though, my favorite episode of the series was the one where we learned that Vincent the dog is God, because dog is God spelled backwards. I feel sort of guilty revealing such an important spoiler to someone who hasn't watched the whole series. But he did ask.