What do you think Juliet meant by it worked? Does she mean the bomb exploded? Also how could she know if the bomb exploded, how could she know it did and why dint it kill them all. Also now there are 3 Locke bodies around!
I think she meant that the bomb worked the way it was supposed to be (prevented the Swan from being built). Raises more questions as she would know about the other timeline, but to me it kinda makes sense.
Yeah -- approarching death = utlimate enlightenment. I think having Desmond on the plane was the ultimate "you don't know shit" from the producers. He's personally my favorite characters (his episodes would be great standalone stories) so am glad he was there (sort of). But, as per before, I don't think the sideways flashes are going to be explained for several episodes.
The Lost producers should start explaining things instead on getting more complicated stuff out there...