Yeah. Depends how much of it you have seen up until now.
But it all ended with Jack heading to a cave of light, which is what Jacob has been protecting on the island the entire time.
Some crappy hole in the floor has a massive stone plug. They take the plug off, and the smoke monster disguised in Lockes body is suddenly mortal. So kate kills it after an epic tiger leap by jack over the cliffs. Funny stuff.
Blah blah blah. Lots of really wet and lame flashbacks of how everyone knows who they are despite never meeting in the alternative universe. Their memories jump, and then they all join up in a church type place.
Not necessarily a christian church, as its full of all sorts of symbols.
Metaphor for an end, theres a coffin. It is empty. Oh ho ho, we expect it to be Jacks dad, but it isnt. Empty. Moral of the story is? Looks like it is open to interpretation. Looks like it is Jack's end, and every has been gathered there to remember and put a closure to his story.
Everyone is happy. Yawn.
But the best and almost funniest part is the Eko line 'dont confuse coincidence with fate' lays to rest the idea that pretty much all the filler and all the theories people talked about are... crap. Anything is possible, and everything isn't at the same time. The point is the fate. The beginning and the end. Everything in the middle is whatever you make. It's what made the show famous - everyone's one perspective of the middle bit, but the universal ending. 1000000's scenarios, but one unified conclusion.
I am gutted. It was so poorly done. Awful way to end an otherwise very creative show.
6 years. 6 YEARS!
Jenson drives it like he owns it; Lewis drives it like he stole it