There was so much that went on in tonights episode, its hard to know where to start. First of all, the back story was about Sawyer. We find out that when he was a kid, that while he was hiding under his bed, his dad came and shot his mom, then his dad came into his room, sat on his bed and killed himself.
We also find out that the reason Sawyer was in Austrialla, was to kill the guy that swindled his parents that brought about their death. Sawyer found him (the guys name is Sawyer) and back down the first time. Sawyer went to a bar and found a drinking buddy who happened to be Jack's Dad!!!!!!!!!!!!!!!!!!!!!!!! Jack's dad said talked about how proud he was of his son for turning him in. blah, blah, blah. At the end of the show Jack and Sawyer have a conversation that lets Sawyer know that the guy at the bar was Jack's dad. For a second it looked like Sawyer might tell him, but he changed his mind. Anyways, after talking to Jack's Dad, Sawyer goes back and kills the real Sawyer.
In between all the flash backs we find that a boar has been harassing Sawyer, Sawyer has made it personal and it going to hunt down the boar and kill him. He trys tracking the boar with no luck. The whole time Kate has been following him. She tells him that he will never find the boar, but she will help him if he gives her Carte Blanche - anytime she wants something that he has he has to give it to her no questions asked. (we know from an early conversation between Jack and Kate that Kate is trying to get the gun back from Sawyer. Jack doesn't want Kate to try, because he doesn't want Kate to have to owe Sawyer anything. Well, back to Kate and Sawyer. After tracking all day and not finding the boar, they camp for the night. At the fire, Sawyer and Kate have a drinking game called "I've never" He said its a way for them to get to know each other better. Sawyer says (like in the promo) "I've never been married" and if someone has done what is said, they have to take a drink. Guess what, Kate takes a drink - so we find out that she has been married. (she took a small sip and said it didn't last very long.) They go back and forth for a while then Sawyer says "I never killed a man" Kate takes a drink, then Sawyer takes a drink. He then says "I guess we got something in common" - that's when it goes to the flashback of Sawyer killing Sawyer. When our Sawyer meets the real Sawyer he tells him that his name is James - whether that's the truth or not, I'm not sure.
Well that is not everything that happened, but its the highlights. Oh yah, the light moment was when Charlie and Hurley go and bury Ethan and Hurley talks about Ethan coming back to life.
I'm sure that I haven't covered everything, but I'm sure someone will add to what I have started.