Hurley thinks he has a chance with Abby (or whatever her name is). There was an odd smile last week, but she's a psychiatrist, perhaps she just recognizes him from the hospital?
So we finally know why Jack is no longer married. She left him for somebody else. It'll be interesting to see if she left him for somebody who has a connection to the island. I'll have to watch again, but it doesn't seem like she had a good excuse to leave him or cheat on him though.
I have to wonder if Jack really thinks it is a good idea to start a war with the Others. They have been on the island much longer, and know it much better.
I was among those who didn't think it was Walt on the other end of the computer chat. However, he was heading in the right direction it would seem, even if the Others sent him off the trail. So if it wasn't Walt, why would they give information that would lead to the Others?
Nice touch between Sun and Jin on the beach. I think it is clear they truly love on another.
The main Other guy didn't seem sure who Jack was talking about when Jack talked about Ethen Rom being a spy, but just tried to play it cool. Perhaps more evidence that there is more then one group of Others.