I don't have much to add in terms of the theories surrounding the show, but
I must say, after being thoroughly engrossed in Season 1, then being utterly disappointed by Season 2, I'm finally starting to feel like the show is coming around again. The past few episodes have been pretty satisfying, and if they keep it up, they may just win me back with a new fervor.
I was out at Pilates tonight, so walked in in the middle of tonight's episode. First person I saw was Arnt, talking to Nikki about poisonous spiders. I thought "doo doo doo doo, doo doo doo doo" Twilight Zone moment, wasn't he killed by dynamite last season? Totally confused, until I watched the whole episode again later on ABC. I'm still confused, but the plot certainly thickens doesn't it?
I haven't seen tonight's episode, as it doesn't air for another hour.
But one thing that strikes me, is that the "Others" have tremendous access to the outside world.
They apparently have complete biographies of all the castaways, they have the resources to track down and deliver to the island Locke's dad. They keep up on current events, even showing Jack video of the World Series.
Many, many people in the outside world know of this island, know of the "Others", and know of the castaways.
Another of the many questions LOST! raises, is since so many know of the crash and the survivors, why is no one willing to help? And why is no one wanting to rescue them?