In the jungle, Jack and Kate are not cuddling by the fire. "How long are you going to wait, Jack?' says Kate, who looks bored to tears. "Until I get my voice back. Then I'm going to yell some more." Well, that'll be entertaining. Kate looks around, and then suggests that maybe they can't hear him, but Jack confidently says they can.
After a moment, Kate switches subjects entirely: "I'm sorry I kissed you," she says. Just what every guy loves to hear. Jack seems to take it not as a statement of actual regret so much as an acknowledgement that maybe the circumstances aren't right for them to start thinking about doing the Humpty Dance, which I think is probably right, and he thinks for a moment and comes up with the perfect response: "I'm not." They gaze into each other's eyes for a moment, and then there's the sound of movement in the bush.
Then they spot someone carrying a torch, running through the jungle, someone sounding scared and exhausted. He runs right up to them and falls flat on his face; they roll him over and are shocked to discover that it's a practically unconscious Michael. I think they can be forgiven for not recognizing him running through the jungle, even if viewers could, since he wasn't yelling "Waaaaaaalllllt!" at the top of his lungs.
Next week, no Lost, because Erin really needs to get back to work.