Spoilers in the preview: From the previews, it seems that Locke is in the verge of smashing the Swan hatch computers, Jack leading the Losties in an escape from something (using his pistol in the process), Sawyer jumping into the water first, Eko telling Charlie that they will die in 90 minutes, Sayid assaulting with a rifle, Jack forcing the truth from Michael (the ), and etc. This is gonna be exciting.
I wont spoil it for everybody but I do have some things to say about the final episode.
In my opinion, though there were tons of questions that were cleared up in this season's finale, the show decides to leave a few questions unanswered. (Like Always.) But these questions, albeit pretty few in number leaves you in total anguish and pain. I found myself screaming at the T.V, "No! NO!! Don't end it yet you Bastards!"
Damned writers.
Talented as you are, you have no right to leave people squirming in bed with shaking hands thinking of nothing else than the 3 hour showcase of T.V at its very best.