I watched like five or six episodes but it had been a while so they were kind of new to me.

I don't remember them revealing that Claire was Jack's sister before. I've forgotten a lot about this show, I really would have to go back and watch the first three seasons again. I'd actually like to watch the first season again but I'm not sure if I can deal with watching all three again.

It is a bit odd for Locke to be dead although I'm sure they'll show some things from what happened on the island while they were gone.

How many more seasons are left. Is it just one or two?