The most interesting Christian reference was when they said Locke came up from the water... And then Walt said Locke would be on the beach where people would try and hurt him. I thought that was very interesting/cool.
Also, you guys have got me thinking about Frank Lapidus and that woman. I rewatched the episode and it didn't specify that the woman he left with was blonde... So, I think it'll be Sun. She's the only person next to Sayid that isn't accounted for (Damn, where did Sayid end up?). Anyway, if Sayid didn't end up with the Ajira survivors, the only person Sun would trust (before Locke showed up... And I'm not even sure how she'd react to him) would be Lapidus. She wants to go to main island to find Jin. Makes the most sense to me, what do you guys think?