I agree it was a good place to start from to bring him back with amnesia. I liked how they let Jack call out Jennifer on that ridiculous Daniel story from their last run too, plus her blaming him for being gone when he had been kidnapped. I don't get why Jennifer didn't bring up her and Jack were engaged when he 'died' everytime Eve kept referring to Jack as Jennifer's ex-husband.
I don't completely buy that Jack would be that trusting of Eve though after only a few weeks. I think Jack is cynical by nature and would have trouble trusting anyone in a vunerable state like that.
BTW I read on twitter New Years Eve was the day Emilio, Colin and Daniel all died, so it's fitting that Jack would return on this day too.
