So we saw a scene with Jack consoling Sun on the beach.
Jack says he went back to the garden and while looking for Locke found
one perfect tomato although all the vines appeared dead. He says no one told the stubborn tomato that it was supposed to die.Could this be a metaphor for the candidates that are coming up against MiB? Those that Jacob believes will choose the right way, the noble way, the good and light way.
Jack seems to have a calm about him now, almost a Jacob-like Zen,
And maybe it's staring us "dead" in the face all along. Jack
is a nickname for Jacob!!! Coincidence?!

I still have this eerie feeling that at the end we will be sitting on the beach with Locke and Jack, and Locke saying:
[LOCKE stares at JACK.]
LOCKE: Do you have any idea how badly I wanna kill you?
JACK: Yes.
LOCKE: One of these days, sooner or later... I'm going to find a loophole, my friend.
JACK: Well, when you do, I'll be right here.
LOCKE: Always nice talking to you, Jack.
JACK: Nice talking to you, too.
[LOCKE stands up and walks away. Planted just near and towering above the beach spot where JACK has made his breakfast is the four-toed statue of Taweret.
***poof***
http://www.youtube.com/watch?v=nQDUtjwoaTY&feature=related