Still thinking this one through so my thoughts will be brief... for now
I think we all knew this would be a "set-up" episode to get us to the season finale and it worked nicely in that regard. Still, I really liked the emotional resonance of Charlie on what he thought was his last day on Earth (and I think it still will be). I know a lot of Lost fans are not fans of his character -- they have really put Charlie through the ringer over the years including the nearly disasterous turn to the "dark side" when he was flirting with heroin addiction again and helped kidnap Sun. Still, I found myself tearing up toward the end when he was on the boat with Desmond. I loved the way the flashback worked, showing us the 5 best moments in Charlie's life. I especially enjoyed that they were not huge, Earth-shattering moments, but were sometimes small things like learning to swim or a moment of bravery to help out a stranger. To me, that rang true. It was so honest. I'm gonna miss Charlie a little bit when he is gone (if he is gone).
"Kick-!#%^!" Jack is back and I like it. I am also really enjoying the tension between him and Sayid. The "blow up the camp" idea is pretty good but I am somewhat confused by where the war with the Others goes after this. Does Jack think that blowing up about a dozen of the Others will make the attacks stop or mean that the Others will be even more ruthless? I am not sure this think has been fully thought through. And is Danille going to start living with the Lostaways now? She is certainly taking a side in a fight she has not bothered with until now.
Well, more later... gotta run now.
-Jason "not as action packed as recent episodes, but still quality writing and certainly great acting" Evans