With everyone talking about the deaths of Sayid, Sun and Jin (and maybe Frank) I think it's time for a 'happier' discussion. Such as... oh, I don't know, the Man in Black getting a can of whoop-ass opened on him. Jack's expression says it all for me, did you see how angry he was? No doubt Sawyer will be just as angry when he regains consciousness. Hurley and Kate both bursting into tears shows just how angry they are at the Man in Black as well.
So, Sayid, Sun and Jin are gone, but, look on the bright side, Jack, Sawyer, Hurley and Kate are going to beat the crap out of the Man in Black. I know I would.