Upon rewatching Season 1, here are THREE things I've noticed:
1. The man Kate stays with in Australia when she's on the lam has one arm. Just like so many people in Season 2 (think Marvin Candle).
2. When Jack is chasing after his father on the island in "White Rabbit" (I think that's the episode title), he stumbles off a cliff...just like Hurley when he is following his imaginary Dave around in Season 2.
3. Nadia writes on the back of the photo: "I'll see you in the next life, if not this one." That's the same type of thing Desmond says all the effing time. "See you in the next life, brotha."
Bum bum BUM!