So far it seems to make sense. The explosion created a parallel reality and Sayid has come back to life as the reincarnation of Jacob, though I could be very, very wrong.

It's a bloody shame the video thumbnail spoiled this one

I'm surprised at how much of what they've explained so far does "make sense," in that it's being explained. Yes, there's a strong element of the supernatural or whatever, but that was kind of a given from the very first episode. It's not looking like they're just making it up as they go along (Ron Moore/Galactica-style), which is kind of what I had feared.

Moving this video to Sarzy's personal queue. It failed to receive enough votes to get sifted up to the front page within 2 days.

*beg

Sending this video to Beggar's Canyon to plea for a little attention - beg requested by original submitter Sarzy.