Reserving judgement about this episode until I’ve seen the last two hours….
Spoilers follow as usual 🙂
I didn’t think this episode had the finale feeling yet, though I suppose there are two hours left.
The way that Jack found out Claire was his sister was done really well and I thought the scene was pretty well acted (especially considering it was Jack, whose normal acting ‘style’ is shouty).
Where has all that TNT C4 come from!? 4 of the Oceanic 6 are currently on the island and Sun + Aaron might go back to the island with the next batch considering what they just saw….. Does everyone else blow up!? Desmond! Michael! Scott / Steve! 
(just joking there ;))
Perhaps that is too predictable for Lost? That’s my thinking, but the Michael thing was incredibly predictable.
Who did Ben signal with the mirror?
I loved Locke’s question: Doesn’t moving the island move the people on it too?
Time-wise it seems very close to the time when the Oceanic 6 get off the island and when Ben teleports [or whatever he does] off the island.
Very interesting stuff going on….. two weeks time for the conclusion then! Exciting; very much so but after that it’s a very very long wait 😦 and lot’s of the other TV shows are finishing too *sigh*
Oh well, I guess I could always go outside…. or play halo 🙂
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Josh Anderson's Blog 
As far as it concerns Ben, he signals is in Morse code (… – .. … .) which is translated in English letters ->S T I S E (in Spanish means) stops/ceases [doing] … (stop [STop]; cease [SIS])
Interesting….. though I’m not sure that it really matters what he signalled come to think of it. It’s more important to know who he signalled and why.
Though, if that’s correct, stop what?
Something as….Cease fire maybe?