Hahahaha! Well, "everybody's dead" has been one of my working theories for a while now, so I wasn't shocked that one of the timelines ended up being an afterlife. I did have some complaints about how it was constructed, though.

LOLOLOL Jack and the Man in Black fighting was hysterical! Granted, I pretty much found Jack hysterical all around, what with his complete personality transplant (way to turn into Locke, dude). Oh, S6!Jack, you are delightful, where have you been all this time??