Lost: What Happened?

As season finales go, I'd rate Lost's an 8 or a 9. Great stuff, very satisfying. But like all good stories (and I'm thinking along Stephen King lines here), the final scene left a bit to be desired. Of course, it is open to interpretation, and that is probably best. And I won't spoil it for anyone who hasn't seen it yet, but that last scene? Kinda like the spider at the end of It, or the glowing hand at the end of The Stand. Just meh. Otherwise? I loved it.