The seasons over, and all of your questions have been answered by more questions. For many people, they will have no life, no meaning of existence till the 4th season comes in 2008.
Violence in the middle east, Armageddon, etc. Oh thats nothing to get worked up about. Go into hibernation mode until the next Lost episode.
It'll be hell on earth for the Lost cast. I sure wouldn't want to be in the writers shoes now. They face kidnapping by lost fans, and will be tourtured Sayid style. Bones will be broken to answer questions like "Is that Walt?"
As for the actors, every waking moment they will be followed by fans, podcasters, etc. All with cameras, cell phone cams, video recorders, tape recorders, etc.
They'll follow the actors around, to make sure there in on a scene there filming. They will follow Matthew Fox in the grocery store, Jorge Garcia in the KFC Buffet, Naveen Andrews trying out a guitar at SamAsh.
Just in case it's being filmed by Lost producers. I say, why film? All the fans will be doing it. Saves on cost.
As your mind begins to contemplate what happens, and worry if its jumping the shark, ask yourself, does it matter? You know you'll spend another 48 hours at least watching the rest of it, up to the final point.
I will ruin the end. Charlie wakes up in the plan, with some stash in his hand. He says "WTF?" looks down, and tosses it in the trash.