I liked how they handled Smokey losing his smoke and Flocke becoming an entirely human manifestation of the smoke and thus killable. I think everyone was wondering what Flocke leaving the island meant - whether he would still be a smoke monster in the world. I thought it was fitting that he didn't realize the consequences of his own action in trying to escape - that he would be subject to death himself. It would have been corny if there was a smoke monster terrorizing the world.

The line with Richard and a gray hair was funny too. There are certainly a lot of little things that were never answered; I hope the producers give us some clues.