Claire's dream, Claire's flashback of the psychic's predictions, Ethan's appearance... cree-pee. Also very myth-heavy when it comes to Aaron, of course.
First we have the dream. Claire is in the jungle and sees Locke turning tarot cards.
And then the psychic's foretelling of Aaron's future:
[Shot of Claire's eye opening. We hear a baby crying and see Claire looking around. She sits up and she isn't pregnant. She hears the baby cry, gets up and walks into the jungle to find the baby. We see Locke sitting at a table with a lamp, tarot cards, a table runner, and crystals. He's dealing the cards [but we can't see what they are]. We hear the sound of a sword being unsheathed. There is wind and motion in the trees.]
CLAIRE: What's happening?
LOCKE: You know what's happening.
CLAIRE: But I don't understand. Why --?
LOCKE: He was your responsibility but you gave him away, Claire. Everyone pays the price now.[Locke looks up and has one black eye and one white eye. We hear the baby crying and see Claire running through the jungle. She sees a crib and goes to it. It has a mobile with Oceanic airplanes hanging from it. There is shaking and a sound of the what the airplane might have sounded like when it was crashing. The planes on the mobile start spinning around, at least one is broken. There are a bunch of blankets in the crib. Claire starts digging through them and comes to a pool of blood. Her hands are all bloody. She starts screaming.
MALKIN: I can tell you, this is important.
MALKIN: It is crucial that you, yourself, raise this child.
CLAIRE: You mean with Thomas? Is he..
MALKIN: The father of this child will play no part in it's life, nor yours.
CLAIRE: So what exactly are you saying?
MALKIN: This child parented by anyone else, anyone other than you -- danger surrounds this baby. . .
MALKIN: Your nature, your spirit, your goodness, must be an influence in the development of this child.
CLAIRE: If Thomas and I don't get back together I'm putting this baby up for adoption. I just wanted to find out what would give the baby the happiest life.
MALKIN: There is no happy life -- not for this child, not without you.
CLAIRE: I don't. . .
MALKIN: It can't be another. You mustn't allow another to raise your baby.
CLAIRE: Okay, great. Thanks for taking my 200.
MALKIN: Oh, no look, take it. Ms. Littleton; I am begging you just to consider...
CLAIRE: I can't raise this child by myself.
MALKIN: You have to listen to me.
CLAIRE: Thanks for your time, and my money back.
MALKIN: Ms. Littleton, please. The baby needs your protection. Ms. Littleton, please.
And finally, Charlie's interpretation of why Malkin eventually seemed to want to send Claire on flight 815 to LA to put the baby up for adoption, seemingly against the advice he had previously given:
CLAIRE: I know. It's embarrassing. And now after everything, he was just full of it.
CHARLIE: Or not. I mean, all he wanted was that no one else raise your baby, right? Maybe he knew. I mean, if he wanted it bad enough. If he had the gift, and I believe some people do, maybe he knew, Claire.
Couple all this with the fact that in S4, according to Hurley, Dead-Charlie has a message for Jack: "You're not supposed to raise him." I know the issue of what happened to Claire, and whether she's dead or not, and whether it was right of the O6 to lie and say Aaron was Kate's child, I know all these issues have been hotly debated in the Lost-verse. Why does Claire appear so calm in Jacob's cabin? Why is Aaron left in the jungle? Maybe Cabin-Claire have some knowledge that makes her sure that Aaron is better off, off the island? But I think that the set up here is too solid, and too well done. And that set up is that Claire is supposed to raise Aaron. Without her he is in danger. Which means he is in danger right now. Whatever orchestrated Claire's "disappearance", and whatever/whoever left Aaron in the jungle, is not working for the long-term safety and happiness of Aaron.
To me, this is a storytelling issue: tptb went through a LOT to make us hugely invested in Claire and Aaron and their rescue. Remember Desmond's vision (seemingly forgotten in the S4 finale) of Claire and Aaron getting on a helicopter? The vision that made Charlie willing to sacrifice himself in "Through The Looking Glass"? That was yet another big brick in the wall of "Aaron should be with Claire". For the show to reneg on that, and suddenly Aaron being fine with Kate and Jack... not happening imo. Again and again it's been reinforced that Aaron needs Claire.
Therefore, until other evidence surfaces, I remain convinced that Aaron leaving the island without her was not a good thing, at least not for his long-term happiness.
Now I know that Malkin the psychic eventually meets up with Eko and tells him he's not a psychic, that he's a fraud. But I don't think that's right. His daughter meets Eko, after she miraculously comes back to life after drowning and "dying". She has a message to him from Yemi.
Maybe we haven't seen the last of Malkin? Maybe he'll pay a visit to Kate in the season to come? Or, maybe, we will see that Malkin is working for The Others? Or Widmore? And that they somehow also foresaw the crash? Though that seems rather unlikely...
Ethan's appearance in the jungle at the end of the ep with Claire and Charlie there is the final creepy nail in the coffin. And right after we've seen Hurley tell Jack that Ethan was not on the plane. Whoa. Epis don't come much freakier than this!
Screencaps thanks to lostpedia and lost-media.