I'm not usually nutty about stuff like this, but for some reason, I feel kind of emotional about the finale. I saw an interview that "Kate" (Evangeline Lilly) did on The View a while back, and I think she really made a great point - that Lost is a show that focuses on so many universally-emotional and personally-important questions that other shows in our generation don't address. And, I totally agree. It's had its shaky moments and outlandish plots, but something about it just sings to me - and to so many others, too, it seems. It could be that watching someone else's interpretation of the ultimate answer to the ultimate question - why are we here? - just seriously entertains me. But, I think in some ways, it's a little more than that, and something about "getting to the end" and "finding out what happens" helps me move along in my own little journey to find the answers I'm looking for. And, well, I think that's worth getting a little emotional over.
I found this really great clip with very candid mini-interviews from the cast-members of Lost about what the show has meant to them and how they feel about it coming to an end. I think the cast are even sad to see their characters go. (FYI - there are NO spoilers here!)