Every scene, every shot, every part of the dialogue (down to the smallest utterance), body language, the smallest facial expression... they can each be an important element of the story-tellers' attempt to tell a story. With Lindelof involved, this reality is ballooned by an order of magnitude.
In this thread, I'd really like to hear peoples thoughts on the following:
What important parts of the story, if any, was the exploding head scene attempting to communicate?