wow. this whole time i was convinced that Jin was alive and that the episode where Sun has her baby.... well, I thought it was all flashforward and that Jin lost his memory when he left the island (however he did) (like Desmond with the memory thing) and therefore, I was bloody confused when he was suddenly dead at the end? I still don't think that his was a flashback... after all... if the panda was a gift to Mr Paik as a congratulations for his becoming a grandfather... and it was a flash back... does that mean Sun has a child already? before coming to the island?
I thought he lost his memory (maybe Mr. Paik knows something about Widemore and the two are connected and knew Jin would lose his memory upon his return...or figured something out with Widemore somehow, a deal,...after all.. he never liked Jin right? Any excuse to keep him from her daughter, and what better way than Sun thinking Jin was dead?) and therefore doesn't remember Sun, and Sun thinks he's dead. But here he is, alive, delivering a panda to Mr. Paik in congrats of his granddaughter (it was a girl right?)... I thought all along both were flashforwards.. maybe im wrong..