Ah the walkabout episode. I still get goosebumps when watching that scene. That was the scene when I knew, Lost was the greatest show on television.
I'm actually starting to really like Cee's idea that MIB/Smokey is in fact, John Locke. I don't know how but it was always him.
We've seen that John Locke doesn't have a problem with talking about himself in the third person. He did it in Season 5, before he died. Now we see MIB having certain characteristics of John Locke. His scene where he tells the blond boy that he can't tell him what he can't do. That and as a child he was drawing a picture of the smoke monster.
All very interesting. I can see it now, in the final scenes of the season it is revealed to the Locke music.