This year waiting for Lost to start isn't as bad as the previous. We were so concerned about the writers strike, and what is would mean for the season, i.e., would we have a season. It's still hard to stay away from spoilers because they're all over the place, even at places you wouldn't expect them.
Wouldn't it be a wild twist if Jack has a twin (his mother in on the plot), who is a female, and was sent to live on the island. Christian named her Annie, and left her to live there. This opens up all sorts of wild speculation (my theories are NEVER right though).
I have always believed Christian has been in on the plot since the beginning. Where he ties in exactly, and who he is sided with is the great unknown.
More to come!