yea i thought it was fairly obvious that jacob is sayid now that he's back to life and esau is obviously in john locke, both having to use the bodies of the dead now. when the smoke monster came and killed the guys inside where ben killed jacob, after the smoke monster is gone, john lock (esau) comes back and says "im sorry you had to see me like that."
i think that shitty underwater cgi scene nutkase was talking about was just showing in the alternate reality that the island is under water and their plan worked in the sideways reality storyline they are telling.
anyway, it was a great season premiere, i watched it twice on the dvr and im hoping they end up tying a lot of loose ends up.